These ingenious clamps for frame & carcass joints work on any 4/4 stock longer than a few inchesno matter how much longer. Abrasive-lined fixed jaws cam-lock onto stock up to 3/4" thick, letting you apply high pressure without worrying about the length of the perpendicular piece. The Face Frame Clamp is for joining stock end to edge; the Right Angle Clamp is for joining end to face. High-strength aluminum castings weigh just 1-1/2 lbs. each.