Features:
1. Replacement 12mm/14mm one way bearing for pulling start or Roto-start backplate.
2. Suitable for engine shaft of 0.24in (6mm) diameter.
3. Made of premium steel metal, it is hard, firm and durable.
4. Delicate appearance and precise size.
5. This is a great upgrade and spare part for Vertex VX SH 16 18 21 1/8 1/10 engine RC car.

Specification:
Condition: 100% Brand New
Material: Steel
Color: As Pictures Shown
Optional Type: T10045 12mm (0.47in), T10046 14mm (0.55in)
Suitable Engine Diameter: 6mm/0.24in
Compatible: for Vertex VX SH 16 18 21 Engine
Weight: Approx. 8-12g
Item Size: Approx. 6 * 10mm/0.24 * 0.39in

Package List:
1 * Hex Nut One Way Bearing

Note:
This hex nut bearing is not suitable for all 16-21 engines. Please make sure it fits your need before ordering.