POWERTEC 72250 T Track Hold Down Clamp, 5 1/2" L x 1 1/8" W, 2 Pack, and Knob Kit w/Threaded Knobs 5/16" 18 Bolts, 16 Piece Set, Accessories for Woodworking Jigs

INCLUDES: (4) 5-Star Knobs, (4) T-Knobs and (8) 5/16”-18 T-Bolts (1", 1-1/2", 2-1/2" & 3-1/2 in length); (2) Hold Down Clamps for T-tracks/T-slots; (2) 5/16-Inch-18 thread 3-1/2-Inch long T bolts; (2) Washers; (2) 5/16-Inch-18 thread 5-star knobs FUNCTION: Helps secure, clamp down and optimize numerous t-track, fences, routing jig and fixture assemblies – accepts any application that utilizes a 5/16”-18 internal thread (also accepts most ¾ inch wide by 3/8 inch deep T-tracks); Will not work with ¼” t-track SPECS: 5/16”-18 t-bolts: 1", 1-1/2", 2-1/2" and 3-1/2 in length for project versatility; Bolt plates measure 17/32” wide x 13/16” long x 7/64” high. VERSATILITY: Hold Down Clamp Set is ideal for work holding, positioning, and fixturing for many woodworking or metalworking applications, including routers, drill presses, CNC, table saws, jigs, panels, vertical mills and more PLEASE NOTE: Our t-bolts, both 1/4"-20 and 5/16"- 18 have a head size of 17/32" wide x 13/16" long and 7/64" thick (Please see drawing). They are designed to fit Universal T-track or larger and will not fit 1/4" or Mini T-track. Please check the size to verify that they will work for your application.