Olympia Tools 01-122 10-Inch Power Grip Pipe Wrench Self Adjusting Pipe Wrench; Single Hand Operation; Heavy Duty Construction; Hardened And Tempered Jaws Ergonomic Comfort Grip; Drop Forged Alloy Steel; Hang Hole Never Use An Extension On The Handle To Increase Leverage. Adjust Tightly To The Nut Size Before Applying Force.