https://www.titleist.com.fr/teamtitleist/team-titleist/f/club-fitting/21239/how-to-measure-tip-size I purchased a Attas Elements 85 HS Hybrid shaft which is to be a.370 tip, I have also purchased a OEM Titleist sure fit adapter sleeve which is also supposed to be a .370 for a hybrid shaft. The adapter and ferrel is so tight and will not go on to theen-USTelligent Community 10https://www.titleist.com.fr/teamtitleist/thread/93569?ContentTypeID=1Tue, 14 May 2013 14:09:11 GMT9ab519fc-5311-4952-85cd-0a0ceffb73fb:0e040593-f13c-43be-90a4-cea94d3c47d8Cameron D<p>Jimmy,</p> <p>To measure the tip of the shaft you will need to use a golf shaft identification gauge, which slips over the tip of the shaft indicating the diameter. &nbsp;Our Surefit adapters for our hybrids are designed to handle a .370 parallel tip shaft. &nbsp;Know that all of our custom shaft can be purchased individually through a retailer, and will come fully equipped with a Surefit adapter already installed.</p> <p>Cameron</p> <p>1-888-TITLEIST&nbsp;</p><div style="clear:both;"></div>