Infinite Hook is the key to the SD-73 "Infinity". We have taken the classic High Density Cylinderâ„¢ weight block and combined it with a specialized additive found in our Sure Gripâ„¢ coverstock for enhanced traction. This creates strong movement through out the lane, unparalleled by today's standards.
The Low RG (2.51) High Differential (.073) weight block is illegal by today's USBC standards, but since it was approved prior to the rule change it is perfectly legal for all USBC and PBA competition.
