Irwin Tools 524QCN Quick-Grip® SL300 One Handed Bar Clamp/Spreader, 24"Multi position jaws can be positioned anywhere on the bar making even the most challenging clamping or spreading task a snap. I beam bar reduces flexing and bowing. Quick change screw One Handed Bar clamp spreader Multi position jaws can be positioned anywhere on the bar making even the most challenging clamping or spreading task a snap For clamping or spreading I beam bar reduces flexing and bowing. Specifications: Throat Depth: 3 1 4" (81 mm)