Radnor Heavy-Duty, Drop Forged C-Clamps feature a rugged, heavy-duty drop forged steel frame that offers extra throat depth for more versatility to meet your clamping needs. The steel spindles are copper plated for weld spatter protection and are capped with swivel pads that adjust freely to place even pressure on the clamped part. The lacquered finish is for added toughness and the storage box keeps the clamp looking and working like new.