A variation on the bar clamp is a device called the quick grip clamp. Bar clamps usually have a fixed end and a screw-down end. The quick grip clamp uses a pistol-style grip allows rapid adjustment and clamping. They often have plastic coated jaws that make it perfect for delicate projects that can be marred by the steel jaws found on many bar clamps. Quick grip clamps can sometimes be converted to spreaders with no additional tools required, making the quick grip clamp a versatile addition to your tool box.