Size 3" Weight 3.00 Max. Opening 3" Min. Opening 0" Depth 2" Screw Dia. 5/8" Test Load 8,500 Lbs. Weight Per Box 3 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.