This is a putter adapter that converts a regular putter head that has a 90 degree socket into a "broomstick" or long style putter. When epoxied in the socket, it converts the lie from 90 degrees to 79 degrees. That's the lie angle you need for a long putter. Use it with our "Ski Pole" Putter Shaft and a heavier putter head (over 400 grams is perfect). It works on both right hand or left hand putter heads with the 90 degree (not angled, but straight up) socket.