Up For AuctionNew GolfWorks Universal Golf Shaft ExtensionsQuantity:3 ExtensionsFits: .540 to .590 Shafts Steel or Graphite The Universal Shaft extensions will work with almost any steel or graphite shaft. After applying a little epoxy, insert the extension into a shaft, force the provided tapered plug into the extension until the extension expands to fit the ID of the golf shaft. Its that simple. 3 per pack.Will compress to fit a .540″ inside diameter (ID) and expand to fit up to a .590″ inside diameter (ID).