Features 1、Both Tighten and Loosen Ways: Designed to extend wrenches with another wrench to create more leverage. Used on different wrenches to loosen or tighten stubborn rusty nuts and bolts, which can be removed more easily and save effort. 2、Durable Construction: Heavy duty construction of this universal wrench extender adapter prevents drive from slipping or rounding out. The heat treated steel structure makes the wrench extension strong and durable. 3、Save Time and Effort: The universal wrench extender adaptor can save your time and effort. Great for adding more leverage on stubborn nuts and bolts and for getting into hard to reach areas. 4、Rust Proof: This wrench extender is made of premium carbon steel material. This universal wrench extender can work great on rusty nuts and bolts. Resists daily corrosion and tarnishing. Durable for years of usage. 5、Wide Application: This universal wrench extender is perfectly suitable for garages, repair shops and DIY and all applicable scenarios. Specification Item Type: Wrench Extender Adaptor Material: Carbon Steel Color: Black 1/2in drive or 21mm hex drive Application: Suitable for garages, repair shops and DIY and all applicable scenarios Package List 1 x Wrench Extender Adaptor