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 strength and minimum weight
 Black oxide finish resists corrosion
