Size 8" Weight 7.25 Max. Opening 8" Min. Opening 0" Depth 2-5/8" Screw Dia. 3/4" Test Load 12,500 Lbs. Weight Per Box 7-1/4 Lbs. Recommended for heavy industrial and construction work demanding extra strength. Drop forged from selected steel and accurately heat-treated. Steel swivels are securely attached to hardened steel screws. Conforms to Federal Specification GGG-C-406D, Type 1, Class B, medium service.