Bora NGX 24 In. Aluminum Clamp Edge Saw Guide Easy Heat and it uses a B1

and it uses a B1 keyway

M series mono posts have a 4-1/4-inch x 7-1/2-inch x 3-gauge welded plate on 1 end and a 4-inch x 5-1/2-inch x 3-gauge swivel plate on the adjustable end

deep or more

Capacity to complete a range of core finishing applications

Bora NGX 24 In. Aluminum Clamp Edge Saw Guide Easy Heat and it uses a B1Clamping end moves with handle for easy adjustability from one side. Locking handle grabs work surfaces for secure grip that won't budge. Easily increase length with 50 In. extension (not included). Made of heavy gauge, rigid aluminum for extreme durability. Use with circular saws, routers, jig saws, and other portable power tools. Part of entire NGX Clamp Edge System to cut and rip sheets and boards.