Micro Jig Grr-rip Block Model GB-1 Pair Works with jointers, bandsaws, router tables, shapers and table saws Unique nonslip material grips your material surface for precise control Gravity actuated hooks drop down automatically to grab the end of a board 90 flip guide for resawing on bandsaws or vertical milling on the router table Hooks instantly retract when the pushblock grips a material surface