E. Emerson Tool Co. XCSB All-In-One Contractor Stop Block
The E. Emerson Tool Co. Contractor Stop Block has a L-bolt that slides into either track on the E. Emerson Tool Co. All-In-One Contractor Straight Edge Clamping Tool Guide.  The large wing nut on top locks the  block into position.  Additional micro adjustments can be made with the multi position bolt and lock nut.  Use the stop block to terminate cuts or as a positioning stop when using your clamp as a fence for your drill press.