ASME B107.100,ASME B107.8

Adjustable jaw design allows tool to grip many fastener sizes

Knurl adjusting mechanism for quick and precise adjustments

Built-in tension spring stabilizes movable jaw

Forged chrome vanadium steel is strong and durable

Polished chrome head and chrome-plated body for anti-corrosion protection

Laser-etched SAE and mm jaw scale for easy size adjustment

Lightweight handle design