Adjustable jaw design allows tool to grip many fastener sizes Knurl adjusting mechanism for quick and precise adjustment Laser-etched fractional and mm jaw scale for easy size adjustment Built-in tension spring stabilizes movable jaw Forged Chrome Vanadium steel is strong and durable Lightweight handle design Polished chrome head and chrome-plated body for anti-corrosion protection Meets ANSI specifications Handle hole for tethering, hanging or storage