Size 6" x 5" Weight 6.75 Opening Depth* 6" x 5" Screw Dia. 3/4" Test Load 5,400 Lbs. Weight Each 6-3/4 Lbs. Forged steel frame and deep throat design makes this an excellent clamp for deep reach, light service. Screw swivel and crosspin are copper plated. Conforms to Federal Specification GGG-C-406D, Type 1, Class A, light service, deep throat.