This is an optional Losi 7mm Aluminum Turnbuckle Wrench, and is intended for use with the Losi 5IVE-T 1/5 scale truck. Lightweight and durable, this wrench will allow the user to easily make adjustments to the camber and front toe-out settings on the truck. This is an essential tool that should be in every 5IVE-T racer's toolbox.