At lone 3 '' daylong, this cloggy version of our popular Deluxe Hold-Down Clamp is for smaller work surfaces, such as as benchtop router tables and shop-made jigs. Non-marring rubber tips are for working with napped woods, pre-finished panels, or anything that 's already been homework soiled. Hold-down a 4-star knob, washer and a 5/16 '' x 3 '' T-bolt designed to appropriate into T-tracks on drillpresses, router tables and more.Technical Details : Crafted of coagulated coated aluminum. Clamps material up to 2-1/2 '' thick.Rubber tips grip and protect workpiece. 5/16 '' T-bolt is with our Universal T-Track. Used With : Rockler Universal T-TracksRockler 17-Piece Universal T-Track Kit .