Designed to fit most standard parallel clamps with rails up to 1-1/4” wide and 0..4375” thick, these clamp blocks simplify complex four-corner clamping projects, making glue-ups easier, less stressful, and more precise. Featuring two perpendicular channels, they hold bar clamps at 90-degree angles, ensuring alignment throughout the clamping process

Constructed from heavy-duty, fiberglass-reinforced plastic, each block includes two countersunk screw holes, allowing you to mount them to a workbench or wall for convenient and organized storage. Size of each block is 4-1/2” long x 2-3/8” wide and 3-1/2” tall.

This 4-piece set holds up to four parallel clamps at once, making it perfect for assembling frames, boxes, doors, drawers, and more. For larger projects requiring longer clamps, the dovetail channels at the block ends allow multiple blocks to connect, providing added stability and preventing clamps from tipping during use.

Whether you're working solo or with a team, these clamp blocks keep all parts and clamps securely in place during stressful four-corner glue-ups, freeing up your hands and ensuring a smoother, more efficient, and more accurate process.

WARNING: Cancer and Reproductive Harm -