Description Build the best wood shafts you can with precision tools from TopHat Compression tool for sizing wooden shafts   The tool base is mounted in a power drill and equipped with a sizing insert, it compresses slightly larger wooden shafts to the exact size needed for a proper fit of TopHat© Screw-on Points and Adapters   Includes one tool base and two sizing inserts (5/16″,11/32″)   Machined from stainless steel to the highest standards