World famous Crescent brand For professional, industrial or home use. Wide capacity jaw (sizes 6-12) allows each tool to work with more fastener sizes. Wider handle (sizes 6-12) provides more comfort and less stress to the hand. Tension spring stabilizes jaw and knurl adjusts easily. Alloy steel and heat treated. Proportioned dimensions for greatest strength and minimum weight. Chrome plated finish resists rust and corrosion. Polished head and regular, satin finished handle.