The RSWO-6 Adjustable Wrench is one of three sizes in the Rastall Beaver Series, along with its counterpart wrenches the RSWO-10 and the RSWO-8. This series was first introduced in 2008 and quickly became a favorite tool for heavy equipment mechanics working on hydraulic systems and the “average joe” just working on his own vehicle and equipment. The RSWO-6 is a 6” wrench making it the smallest size of The Rastall Beaver Series with a special wide opening meausring 1 9/16, like the rest of the Rastall Tool Fleet, it is the widest opening wrench in its class. The RSWO-6 Adjustable Beaver Wrench was designed and built with the intention of versatility and being small enough to easily fit into the hand and maneuver in smaller areas. Our wrenches meet all of the U.S. and Canadian specifications making it the top of its class.