{"product_id":"used-autoflex-sf505-driver-shaft-variable-flex-graphite-44-in-callaway-opti-fit-adapter","title":"Used Autoflex SF505 Driver Shaft Variable Flex Graphite - 44 in - Callaway Opti-Fit Adapter","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\u003eShaft Condition:\u003c\/b\u003e Mint\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eBrand:\u003c\/b\u003e Autoflex\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eModel:\u003c\/b\u003e SF505 Driver\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eClub Type:\u003c\/b\u003e Driver\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eShaft Flex:\u003c\/b\u003e Variable\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 50g\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eTip Diameter:\u003c\/b\u003e .335\u003c\/li\u003e\n\u003cli\u003e\n  \u003cb\u003eAdapter Type:\u003c\/b\u003e \n  \u003ca href=\"https:\/\/s3.us-east-1.amazonaws.com\/nrg.productimages\/Shaft+Adapter+Types.png\" target=\"_blank\" style=\"color: #ff5000; text-decoration: underline; cursor: pointer;\"\u003e\n    Callaway Opti-Fit Adapter\n  \u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 44 in\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eGrip Condition:\u003c\/b\u003e Average Wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cscript\u003e\n(function () {\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|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 autoFlex SF505 Driver Shaft blends ultralight construction with KHT (Korea Hidden Technology) to self-tune flex to your tempo, boosting clubhead speed and launch while keeping the head stable through impact. Its responsive midsection and reinforced tip produce a lively, smooth feel and surprising dispersion control, wrapped in the unmistakable neon pink finish.\"\u003e\n    The autoFlex SF505 Driver Shaft blends ultralight construction with KHT (Korea Hidden Technology) to self-tune flex to your tempo, boosting clubhead speed and launch while keeping the head stable through impact. Its responsive midsection and reinforced tip produce a lively, smooth feel and surprising dispersion control, wrapped in the unmistakable neon pink finish.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section hide-if-empty\" data-val=\"This shaft is in mint condition, showing no signs of wear or damage. It has been well-maintained and is ready for immediate use.\"\u003e\n    This shaft is in mint condition, showing no signs of wear or damage. It has been well-maintained and is ready for immediate use.\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 experts recommend the Autoflex SF505 Driver Shaft for golfers seeking effortless speed and a smooth, higher-launch profile. Its ultra-lightweight, elastic design helps increase clubhead speed while maintaining stability through impact, making it a strong fit for players who want easy carry and a lively feel without forcing the swing.\"\u003e\n    \u003cb\u003e\u003cu\u003eOur Recommendation\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n    Our Next Round Golf experts recommend the Autoflex SF505 Driver Shaft for golfers seeking effortless speed and a smooth, higher-launch profile. Its ultra-lightweight, elastic design helps increase clubhead speed while maintaining stability through impact, making it a strong fit for players who want easy carry and a lively feel without forcing the swing.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section hide-if-empty\" data-val=\"autoFlex is a Korean shaft brand famous for its neon-pink profile and a springy, ultra-light build that loads easily then snaps back on plane. Its SF (Speed Fit) flex system matches swing speed rather than traditional flex labels, promoting effortless speed and a smoother tempo. Proprietary layups and variable wall thickness create surprising stability for such light weights, delivering lively feel and consistent launch across a wide range of swings.\"\u003e\n    \u003cb\u003e\u003cu\u003eAbout Autoflex\u003c\/u\u003e\u003c\/b\u003e\u003cbr\u003e\n    autoFlex is a Korean shaft brand famous for its neon-pink profile and a springy, ultra-light build that loads easily then snaps back on plane. Its SF (Speed Fit) flex system matches swing speed rather than traditional flex labels, promoting effortless speed and a smoother tempo. Proprietary layups and variable wall thickness create surprising stability for such light weights, delivering lively feel and consistent launch across a wide range of swings.\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 shaft, 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 Autoflex golf shafts.\u003cbr\u003e\u003cbr\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section\"\u003eStock # S2026-05-14-510732\u003c\/div\u003e\n  \u003cdiv class=\"section\"\u003eMaster SKU # 1020776\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Autoflex","offers":[{"title":"Default Title","offer_id":52505425445140,"sku":"S2026-05-14-510732","price":415.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/0165\/6746\/files\/93e314d3-0924-5397-b667-42a89c60e35f.jpg?v=1778802550","url":"https:\/\/nextroundgolf.com\/products\/used-autoflex-sf505-driver-shaft-variable-flex-graphite-44-in-callaway-opti-fit-adapter","provider":"Next Round","version":"1.0","type":"link"}