Limit the number of special parts in the model Try to reduce the number of special parts used in the model. As example, nuts do not need to be inserted as special parts. Instead, bolt sets that will include both the bolt and ...
The Rubber won't rub off on hand like the cheap replacement parts offered by competitors.Improve Metal Locking NutEnhance torque, Increase the safety factor on the basis of the original factory. Reinforced the Design of the Ball PinImprove ball...