Laser-etched scale in both SAE and metric sizes allows easy fastener size identification
A 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
An ergonomic handle increases comfort and reduces fatigue
Proportioned dimensions for strength and minimum weight
Black oxide finish resists corrosion.