12", Adjustable Wrench, Proprietary Adjustment Screw Jaws Won't Back Off, Parallel Jaws Won't Slip Or Damage Finish Surfaces, Adjustment Screw Gears Designed For Smooth Adjustment, Ergonomic Handle Form Maximum Comfort, Won't Dig Into The Palm, Chrome Plated For Rust Protection & Durability, Laser Etched Ruler For Easy To Read, Accurate Size Adjustment, Tether Ready Handle Loop.