Here we have a set of Toe clamps for any CNC machine, but it's made specifically for the Hobby CNC's out there. Shapeoko, X-carve, Onefinity, CNC4Newbie, etc... clamps have a 1/4-20 bolt that moves the closing mechanism. The clamp has a hole where you can screw it down to your waistboard with another 1/4-20 bolt or anything smaller then that size. 1.5" wide, 1.5" tall, and 2.75" at is longest point. They are very "chunky" and will hold a substantial load. These are 3D printed with PETG (what plastic bottles are made of). Check out my other listing of a 4 piece set.!!!