Bessey TGJ2.518 2-1/2-Inch x 18-Inch Regular Duty Tradesmen Bar Clamp Bessey's simply unequalled, proven clamp design has made it the choice of professionals worldwide Tradesmen bar clamps are fast action, high quality sliding arm bar clamps These clamps feature a patented profiled rail Patented profile rail Non-slip locking device 1 beam design Zinc finished drawn rail Non marring pads