{"product_id":"used-callaway-big-bertha-b21-driver-10-5-degrees-stiff-flex-mitsubishi-tensei-av-blue-left-handed","title":"Used Callaway Big Bertha B21 Driver - 10.5 Degrees - Stiff Flex Mitsubishi TENSEI AV Blue - Left-Handed","description":"\u003cstyle\u003e\n\/* Force a real 2-column grid on THIS list only, overriding the theme *\/\n#product-desc-list{\n  display:grid !important;\n  grid-template-columns:1fr 1fr;\n  gap:0;\n  list-style:none;\n  margin:0 0 16px 0;\n  padding:0;\n  column-count:initial !important; \/* kill multi-column layout *\/\n}\n#product-desc-list \u003e li{\n  margin:0 !important;\n  padding:6px !important;\n  border-bottom:1px solid #d9d9d9 !important;\n  float:none !important;          \/* kill float layouts *\/\n  width:auto !important;          \/* kill width:50% rules *\/\n}\n#product-desc-list \u003e li._left { border-right:1px solid #d9d9d9 !important; }\n\u003c\/style\u003e\n\n\u003cul id=\"product-desc-list\" style=\"visibility:hidden\"\u003e\n    \u003cli\u003e\n\u003cb\u003eClub Condition:\u003c\/b\u003e Very Good\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLoft:\u003c\/b\u003e 10.5°\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eHandedness:\u003c\/b\u003e Left-Handed\u003c\/li\u003e\n\n\n\n\u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e\n  \u003ca href=\"#\" onclick=\"document.getElementById('lengthChartModal').showModal();return false;\"\u003e\n    45.25 in\n  \u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cdialog id=\"lengthChartModal\" class=\"length-modal\" onclick=\"if(event.target===this) this.close();\"\u003e\n  \u003cdiv class=\"length-card\"\u003e\n    \u003cbutton type=\"button\" class=\"length-close\" aria-label=\"Close\" onclick=\"this.closest('dialog').close()\"\u003e✕\u003c\/button\u003e\n    \u003cimg id=\"chart-img\" src=\"\/\/nextroundgolf.com\/cdn\/shop\/files\/Driver_Length_1.png?v=1673984858\u0026amp;width=1640\" alt=\"Driver Length\"\u003e\n  \u003c\/div\u003e\n\u003c\/dialog\u003e\n\n\u003cstyle\u003e\n  \/* Force true centering and sit above theme layers *\/\n  #lengthChartModal.length-modal{\n    position: fixed !important;\n    inset: 50% auto auto 50% !important;\n    transform: translate(-50%, -50%) !important;\n    margin: 0 !important; padding: 0 !important; border: none !important;\n    background: transparent !important;\n    z-index: 999999 !important;\n  }\n  #lengthChartModal::backdrop{ background: rgba(0,0,0,.65); }\n\n  \/* The visible card (bigger + scroll-safe) *\/\n  #lengthChartModal .length-card{\n    position: relative;\n    width: min(90vw, 600px);     \/* \u003c- adjust this for desktop width *\/\n    max-height: 80vh;\n    background: #fff; border-radius: 12px;\n    box-shadow: 0 10px 30px rgba(0,0,0,.35);\n    overflow: hidden;\n  }\n\n  \/* Make image fill card; ignore any width\/height attrs *\/\n  #lengthChartModal img{\n    display: block;\n    width: 100% !important;\n    height: auto !important;\n    max-height: 80vh !important;\n    object-fit: contain;\n  }\n\n  \/* Close button INSIDE the card so it can’t be clipped *\/\n  #lengthChartModal .length-close{\n    position: absolute;\n    top: 8px; right: 8px;\n    width: 36px; height: 36px; border-radius: 999px;\n    border: 2px solid rgba(0,0,0,.2);\n    background: #fff; font-size: 20px; line-height: 1; cursor: pointer;\n    box-shadow: 0 2px 8px rgba(0,0,0,.15);\n  }\n\u003c\/style\u003e\n\n\n\n\n    \u003cli\u003e\n\u003cb\u003eShaft Flex:\u003c\/b\u003e Stiff\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eShaft Brand:\u003c\/b\u003e Mitsubishi\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eShaft Model:\u003c\/b\u003e TENSEI AV Blue\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eShaft Material:\u003c\/b\u003e Graphite\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eShaft Weight:\u003c\/b\u003e 59g\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eHeadcover Included?:\u003c\/b\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cscript\u003e\n(function () {\n  \/\/ --- NEW LOGIC START ---\n  \/\/ 1. Capture the department variable\n  const department = \"Men\"; \n  \n  \/\/ 2. Identify the image element\n  const chartImg = document.getElementById('chart-img');\n  \n  \/\/ 3. Define the Women's Wood Chart URL\n  const womenChartUrl = \"https:\/\/cdn.shopify.com\/s\/files\/1\/0601\/0165\/6746\/files\/Women_s_Wood_Standard_Lengths.png?v=1771424027\u0026width=1640\";\n\n  \/\/ 4. If the department is exactly \"Women\", swap the source\n  if (chartImg \u0026\u0026 department.trim() === 'Women') {\n    chartImg.src = womenChartUrl;\n    chartImg.alt = \"Women's Wood Standard Lengths\";\n  }\n  \/\/ --- NEW LOGIC END ---\n\n\n  const ul = document.getElementById('product-desc-list');\n  if (!ul) return;\n\n  function pruneAndLayout(){\n    \/\/ Remove empty\/unspecified rows instead of hiding them\n    const items = Array.from(ul.querySelectorAll('li'));\n    let kept = [];\n    items.forEach(li =\u003e {\n      const label = li.querySelector('b');\n      const labelText = label ? label.textContent : '';\n      const valueOnly = label\n        ? li.textContent.replace(labelText, '').trim()\n        : li.textContent.trim();\n\n      const emptyish =\n        valueOnly === '' ||\n        valueOnly === '°' ||\n        \/^(Not Specified|Not Specified°|Unspecified|Not Applicable|N\\\/A|NA)$\/i.test(valueOnly);\n\n      if (emptyish) li.remove();\n      else kept.push(li);\n    });\n\n    \/\/ Re-mark visible items as left\/right cells so borders line up\n    kept = Array.from(ul.querySelectorAll('li')); \/\/ in case we removed some\n    kept.forEach((li, i) =\u003e {\n      li.classList.toggle('_left',  i % 2 === 0);\n      li.classList.toggle('_right', i % 2 === 1);\n    });\n\n    \/\/ If odd count, add a blank cell so the last row closes cleanly\n    if (kept.length % 2 === 1) {\n      const filler = document.createElement('li');\n      filler.innerHTML = '';\n      ul.appendChild(filler);\n      filler.classList.add('_right');\n    }\n\n    \/\/ Show after we’re done so there’s no flash\n    ul.style.visibility = 'visible';\n  }\n\n  \/\/ Run immediately (before most theme scripts finish)\n  pruneAndLayout();\n\n  \/\/ Guard: if the theme reflows\/rewrites after our run, fix it again\n  const mo = new MutationObserver(() =\u003e pruneAndLayout());\n  mo.observe(ul, { childList: true, subtree: false, attributes: false });\n})();\n\u003c\/script\u003e\n\n\n\n\u003cdiv class=\"nr-desc\"\u003e\n  \u003cdiv class=\"section hide-if-empty\" data-val=\"The Callaway Big Bertha B21 Driver is a high-performance used golf club that combines advanced technology with affordability. This club is designed with Artificial Intelligence (AI) to optimize speed, making it perfect for golfers seeking to improve their game. Its unique Flash Face SS21 technology ensures fast ball speeds across a more expansive area, while the Jailbreak bars increase stiffness and promote even more speed. The Big Bertha B21 Driver is particularly beneficial for golfers who struggle with slice, as its advanced design promotes straighter, longer drives. This affordable, high-performance used golf club is a smart investment for any golfer looking to enhance their performance on the course.\"\u003e\n    The Callaway Big Bertha B21 Driver is a high-performance used golf club that combines advanced technology with affordability. This club is designed with Artificial Intelligence (AI) to optimize speed, making it perfect for golfers seeking to improve their game. Its unique Flash Face SS21 technology ensures fast ball speeds across a more expansive area, while the Jailbreak bars increase stiffness and promote even more speed. The Big Bertha B21 Driver is particularly beneficial for golfers who struggle with slice, as its advanced design promotes straighter, longer drives. This affordable, high-performance used golf club is a smart investment for any golfer looking to enhance their performance on the course.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section hide-if-empty\" data-val=\"This driver shows minor crown scratches and light sole wear from play. There is noticeable and heavy face wear from ball strikes, indicating regular use. Overall, it remains functional and reliable for play.\"\u003e\n    This driver shows minor crown scratches and light sole wear from play. There is noticeable and heavy face wear from ball strikes, indicating regular use. Overall, it remains functional and reliable for play.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n\u003cstyle\u003e\n  .pured-shaft-section { display: none; }\n  .pured-shaft-section[data-pured^=\"Yes\" i] { display: block; }\n\u003c\/style\u003e\n\u003cdiv class=\"pured-shaft-section section\" data-pured=\"No\"\u003e\n  \u003cb\u003e\u003cu\u003ePured Shaft Upgrade\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n  This shaft has been pured through computerized analysis to identify its most stable, consistent bending plane, optimizing performance, increasing distance, tightening dispersion, and reducing natural structural irregularities.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\n  \u003cdiv class=\"section hide-if-empty\" data-val=\"Our Next Round Golf club experts recommend the Callaway Big Bertha B21 Driver for golfers who want to hit longer and straighter drives. With advanced technology like the A.I. designed Flash Face and Jailbreak bars, this driver helps reduce slices and hooks while increasing ball speed. Improve your game with the Big Bertha B21.\"\u003e\n    \u003cb\u003e\u003cu\u003eOur Recommendation\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n    Our Next Round Golf club experts recommend the Callaway Big Bertha B21 Driver for golfers who want to hit longer and straighter drives. With advanced technology like the A.I. designed Flash Face and Jailbreak bars, this driver helps reduce slices and hooks while increasing ball speed. Improve your game with the Big Bertha B21.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section hide-if-empty\" data-val=\"Callaway is one of golf's leading brands, known for innovation across drivers, irons, wedges, balls, and more. Technologies like Jailbreak and AI-designed faces power their performance, making Callaway gear a trusted option for players at every skill level.\"\u003e\n    \u003cb\u003e\u003cu\u003eAbout Callaway\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n    Callaway is one of golf's leading brands, known for innovation across drivers, irons, wedges, balls, and more. Technologies like Jailbreak and AI-designed faces power their performance, making Callaway gear a trusted option for players at every skill level.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section\"\u003e\n    \u003cb\u003e\u003cu\u003ePlaying It Forward\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n    By choosing this premium used driver, you're not only investing in your own game but also contributing to Next Round Golf's mission of making golf more affordable and accessible for enthusiasts at every skill level. You’re joining a passionate community dedicated to sustainability, continuous improvement, and the shared joy of discovering new potential on the course.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section\"\u003e\n    \u003cb\u003e\u003cu\u003eNext Round Guarantee\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n    With over 18,000 five star reviews and a 30 day money back guarantee, you can trust Next Round Golf for high-quality used Callaway golf clubs.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section\"\u003eStock # S2026-05-05-516554\u003c\/div\u003e\n  \u003cdiv class=\"section\"\u003eMaster SKU # 1000916\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Callaway","offers":[{"title":"Default Title","offer_id":52459715854612,"sku":"S2026-05-05-516554","price":174.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/0165\/6746\/files\/1777986768132_o5ui6xv5p1g.jpg?v=1778674040","url":"https:\/\/nextroundgolf.com\/products\/used-callaway-big-bertha-b21-driver-10-5-degrees-stiff-flex-mitsubishi-tensei-av-blue-left-handed","provider":"Next Round","version":"1.0","type":"link"}