M12 / M8 thread reducer screw can also be used to add Star Adventurer counterweights to AZGTi mechanisms. AZGti mechanics can accept a counterweight shaft with an M12 thread, while Star Adventurer counterweights have a smaller M8 thread, a size difference that the thread reducer screw is designed to eliminate.
(The price is valid for the purchase of 1 thread reducer screw, the pictures are for illustration purposes, the counterweight and the shaft are not part of the product)