Steel Spring Clamp Grips - PVC Cushion Grip & Tips Steel Spring Clamps Have Vinyl tips and handles to help prevent marring. Heavy duty springs that allow for firm grip with small projects. Throat Depth: 1 1/4". Jaw Oepn 1". The body is made of a nickel plating to resist corrosion. Often referred to as extra hands, metal spring clamps are great for woodworking & Other projects Non-slip padded jaws grip workpiece without damaging surface