Ripping panels up to 104Rockler 52” to 104” Low Profile Straight Edge Clamp System: A clamping tool every woodworker needs to own! You get a smooth, straight wood edge with our precision straight edge Rockler clamp tool. ?Clamp and Tool Guide Includes: The straight edge wood clamp tool includes a pair of clamps, a handle, and an extension tool to join 2 sections of a 52” panel to make it 104” to cut the large wood. To assemble the straight edge clamp, 4 screws with nuts and bolts are also included. The yellow blank space on the woodworking clamp panels is to mark at the time when you cut the wood. --- About Us: The history of Rockler Woodworking and Hardware goes back to 1954 when Norton Rockler started the Minnesota Woodworkers Supply Company in north Minneapolis. It was a small mail-order business with a big aspiration ? to become woodworkers go-to resource for everything they need to complete their projects. " long has never been easier! The 52" to 104" Low Profile Straight Edge Clamp does it all.