The Reed R450+ Tripod Vise features unbelievably sturdy construction for effective, all day performance. Heavy gauge steel, overlapping hinges and an adjustable tray clamp (not a set screw) keep the entire portable workbench tight - even after hours of use. The heavy duty chain handles pipes up to 6" in diameter. The tool tray features a raised lip to keep tools from rolling off. Reed's exclusive double faced jaws mean you get twice the life from the jaws. When you're finished, tripod vises fold into a compact shape and feature a padded handle for a surprisingly lighweight and portable tool. The R450+ features a slightly smaller tray for a lightweight and a 90° crank handle.