This is a replacement pull start backplate cover screw, and is intended for use with Alpha 21RTR, 28RTR.
This 4 Shoe Clutch Spring only can be used in Alpha 4 Shoe Clutch System
This is a set of 3 Connecting Springs, and are intended for use with 1/8 Scale Nitro Engines. These Connecting Springs attach the tuned pipe to the tuned pipe manifold.