The Tusk TPI Idle Adjustment Screw is a must-have for TPI owners. The OEM idle screw inside the throttle body can be difficult to adjust but with the Tusk TPI Idle Adjustment Screw, the idle can be changed in the blink of an eye. Made out of stainless steel to ensure strength and function when you need it most. When looking for tools or parts for you motorcycle, ATV, or UTV... think TUSK!