Robust cast-iron frame with steel threaded bar. Tommy bar handle for easy tightening. Swivel shoe allows for clamping irregular-shaped objects. Copper-plated thread prevents weld spatter from sticking. Reinforced shoulders provide greater strength. Corrosion-resistant frame finish. Robust cast-iron frame with steel threaded bar. Tommy bar handle for easy tightening. Swivel shoe allows for clamping irregular-shaped objects. Copper-plated thread prevents weld spatter from sticking. Reinforced shoulders provide greater strength. Corrosion-resistant frame finish.