General Specifications fro Manufacturer's Brochure:
Consists of three (3) guide tubes with internal diameters of:
.670" for 1/2" TO 5/8" diameter barstock
.551" for 1/4" TO 1/2" diameter barstock
.315" for 1/16" TO 1/4" diameter b...
Hardened T-Slot clamp, actuation causes both a clamping force and pull down force. Hardened for durability and logevity. Serrated for holding rough components or additional hold force.