World famous Crescent brand adjustable wrench. These wrenches are made of fine alloy steel to give extra strength and wear. Used by professional mechanics, industrial tradesman and home mechanics. Dimensions are proportioned for greatest strength with minimum weight. A tension spring under the knurl helps prevent the jaw opening from changing adjustment. An open handle design permits easier knurl adjustment. Handle made of forged alloy steel and heat treated for toughness and durabilty. Jaw Capacity : 0.500, Handle Material: Steel, Length (Inches) : 4, Finish: Black Phosphate, Weight (lbs): 0.135.