The original adjustable wrench, made by the world-famous Crescent® brand Laser etched scale in both SAE and metric sizes allows easy fastener size identification Larger knurl provides a tighter jaw fit, is easier to adjust and is less likely to bind up Hex jaw design reduces slippage by gripping fasteners tightly Heat-treated forged alloy steel for toughness and durability Tension spring stabilizes jaw and allows easy knurl adjustment Ergonomic handle increases comfort and reduces fatigue Proportioned dimensions for greatest strength and minimum weight Black oxide finish resists corrosion 1/2", 13mm jaw capacity fits a wide range of fastener sizes