Jorgensen's steel I-bar clamps are made of extra carbon and manganese to withstand industry, schools and home craftsmen use. Multiple disc clutch grips automatically at any point. Secure hold and grip with easy release. 1-1/2 in. by 7/16 in. steel bar. Clamp has a 48 in. maximum opening, 1-3/4 in. reach, and packs up to 4,000 lbs. of clamping force. Designed for high-demand professional and institutional use Resistant to twisting and bending 48-in maximum opening Steel bar made with extra carbon and manganese to increase durability Color/Finish Family: Orange Sub-Brand: N/A Type: Bar Throat Depth (Inches): 1.75 Clamping Force (lbs.): 7000 Material: Steel Maximum Jaw Opening: 48-in Package Quantity: 1 Warranty: Limited lifetime CA Residents: Prop 65 Warning(s): Yes UNSPSC: 27112100