The high quality, aircraft grade aluminum adjustable jaw clamp grips close to the joint, avoiding problems with bowing. Quickly converts into bench mounted vise or portable clamp. Up to 5" wide x 1-1/2" thick stock can be joined at 45. Basic clamp, Y-shaped miter clamp attachment, tapered bench mount base, extra long link and non-marring jaw pad included. MADE IN THE U.S.A.!