Drop-Forged: Manufactured for greater strength in standard applications V-Grooved Anvil: Feature allows secure holding of all materials including rounds, squares, and flats ACME-Rolled Spindle: Threads provide continuous smooth operation for faster clamping action and maximum strength Copper-Plated: Spindles and pads are copper-plated to provide resistance to welding spatter and corrosion Ideal For: Steel fabrication and industrial welders