The HYTORC Washer eliminates the need for a reaction arm during bolting, which prevents pinch point hand injuries. In order use the Lithium Series II Battery Torque Tool without a reaction arm, you'll need to install the HYTORC Washer Driver. This driver will react off of the HYTORC Washer, while the internal socket tightens the nut. This innovative system is an ideal improvement for safety managers looking to reduce injuries on the job site. In this video, Hardy will show you how to easily install the HYTORC Washer Driver on the LST Tool.