These next generation ISD clamps are fast, convenient and allow for easy one-handed operation. Jorgensen reports that these are capable of 76% more clamping force than the competition! Steel clutch plates eliminate slippage. The comfortable handle design affords a good grip, while the reversible head provides standard clamping and spreading capabilities (a quick release knob allows for fast and easy changeovers). Two clamps may also be connected to make one clamp with double length. Load limit is 300 lb. Made in Taiwan. Jorgensen brand. Sizes listed below refer to maximum opening.