Signswise CNC Aluminum 70mm Adjustable Stinger Drive & 4mm Tube for RC boat/ Remote Control Boat This new released high quality CNC Aluminum stinger drive and 4mm flexible cable set is for rc model boat. The stinger is adjustable. The distance from the transom to the rear of the stinger: 70mm (2 3/4") Mounting bracket: 31mm(1 1/4") X 24mm (15/16") Weight: 30g