Your sleeves and collars changed the way I can have fun with my shafts and club heads . Now I can try everything on my favorite shafts just changing the crowns ! A very smart idea !
Great product, keep up the golf market. The only company making this kinda item.
Allowed me to do some testing of different model club heads and keep the inventory of shafts to a bare minimum. This also allowed me to understand the difference between stiff shafts and it's relation to head weight. For the cost of the adapters and the shaft it came in lower than a fitting session and I get to have a larger sample size with many range visits vs one fitting session. The only issue I had was one of the 3 adapters I purchased snapped on me.
Easy to use and install. A great way to make sure your expensive shafts are usable over a range of driver heads.