Viper Pro Break In Block
The Viper Scale Racing (VSR) Pro Break In Block features CNC machined solid PVC material with power rails bonded in place. This block allows you to break in motors and the 3 pockets also allow you to break in complete rear axle assemblies. This is a must have for builders and racers.Features: CNC machined solid PVC material with power rails bonded in place.
Includes: 1 - break in block.
Note: Recommended for ages 8 to adult.