Elevate your clamping work with the BORA parallel clamp blocks. Designed to fit most standard parallel clamps, they have two channels perpendicular to each other, allowing the clamp bar to be supported for quick, accurate alignment of your clamps. The parallel clamp blocks are constructed of heavy-duty plastic and hold up to 2-BORA parallel clamps for easy clamping of frames, boxes, and more. If you're using longer clamps, the blocks can be joined together for extra support, preventing the clamp from tipping during use. Plus, each clamp block has 2-countersunk screw holes for mounting to a workbench or wall for easy storage of your parallel clamps. Working alone. Just slide your clamps into the parallel clamp blocks, and they'll hold your project steady for as long as you need.