Matthellini Clamp 3" Center Jaw Provides strong, solid gripping of round, square, or rectangular tubing and many other common and irregular shapes. Features ergonomic handle design and reinforced jaws, and the shaft is 1010 chrome-plated steel. Available with 2' or 3' Center Jaw and 2' or 6' End Jaw. The Center Jaw has a fixed jaw mounted at the base of the Baby Pin portion of the shaft providing strong support for the pin. The End Jaw has the fixed jaw mounted at the end of the threaded portion of the shaft. Superior in tight places!