These Screw Wings can be added to the heads of the existing bolts on a Luna or 3a Arm to allow the user to quickly adjust the lift tension without using a tool. They are attached using two small set screws are locked in place once tightened, making it easy to adjust. Comes with 4 Screw Wings.
*the wings must be turned horizontally once the lift is adjusted to prevent colliding with the arm bones*
