The new ISD 3 bar clamps offer increased clamping pressure over our already superior ISD bar clamp. The new Expandable feature allows for 2 clamps to be combined into one single clamp. The feature allows the user to add an additional 6 inches of clamping length to their bar clamps when combined. These bar clamps also feature a quick release mechanism for easy changes to the expandable or reversible position. The ISD bar clamps still feature "dual durometer" handles and are a truly "woodworking capable" clamp. Features: * Expandable feature allows for 2 clamps to be combined into one single clamp * Quick release mechanism for easy changes to the expandable or reversible position * Feature "dual durometer" handles * 12-inch maximum opening What"s In The Box: * Adjustable Clamp 33412 12-Inch Jorgensen ISD Bar Clamp