Since the introduction of the original Crescent wrench in the early 1900s, the Crescent brand has become synonymous with adjustable wrenches. Crescent adjustable wrenches feature a large knurl for easy adjustment and a tight jaw fit. Its hex jaw design helps reduce slippage and tightly grips the fastener for solid, secure operation, while the corrosion-resistant chrome finish helps prevent rusting. A wide handle design provides comfort and reduces fatigue during extended use. The Crescent adjustable wrenches are ideal for both pros and Do-It-Yourself enthusiasts. World famous Crescent brand adjustable wrenches are made of fine alloy steel to give extra strength and wear. Used by professional mechanics, industrial tradesmen and home mechanics. A tension spring under knurl helps prevent jaw opening from changing adjustment. An open handle design permits easier knurl adjustment.