Bora 541100 Clamp Edge Wide Track Power Tool Guide, 100-Inch Straight Edge for Circular Saws, Jig Saws and Routers Extra wide 3-3/8-Inch aircraft-grade, extruded aluminum body Integrated dual "T" tracks allow the head of a standard 1/4-Inch-20 bolt to slide into the "T" track to attach shop accessories Integrated clamping mechanism with a large, soft grip clamp surface Large, oversized clamping handle hangs easily when not in use Lifetime warranty