• Model R - Rubber Face Magnefix Jaw Caps _x000d_• Aluminum alloy with synthetic rubber cover _x000d_• Jaw cap conforms to workpiece and grips firmly without slipping while protecting work surface _x000d_• Use in combination with Aluminum and Prism Jaw Caps to clamp taper pins or tapered workpieces _x000d_• Temporary work-holding systems. _x000d_• Designed to protect both the vise jaws and the workpiece from marring and distortion during any clamping application _x000d_• Caps are constructed from a hardened aluminum alloy with two built-in circular permanent magnets on the backside which holds the product securely to the vise _x000d_• Caps are magnetic towards the vise side to prevent steel filings from attaching themselves to the jaws and keep the clamped part from becoming magnetized_x000d_• Height: 0.6 inch_x000d_• Width: 1.7 inch_x000d_• Length: 7.9 inch