Gardner Bender designed the innovative locknut wrench to end frustration! Specfically developed for tightening and loosening locknuts this wrench features a thin profile that makes those normally tight spaces a thing of the past. It can be used to loosen or tighten a locknut by rotating the wrench in the direction of the arrows clearly etched into both ends of it's sturdy steel construction. A specialty hooked tip latches onto the locknut and maximizes turning leverage. The GB Locknut Wrench is a reliable and durable addition to any tool box and this two piece kit includes one 1/2 inch and one 3/4 inch locknut wrench ensuring you have the size needed to fit the majority of UL locknuts you will encounter.