The compact and handsome Viper is a powerful tool in the right hands. All electronics and mounting hardware is included. 
 
Viper Vertical Spinner kit includes
Drum Weapon: 28mm clamping drum with AR400 steel teeth
Motor: 1100KV brushless motor produces around 8000RPM with a 2S LiPo
Controller: 20A brushless speed controller & battery harness
Motor Mount: A pair of tough motor mounts secure the weapon motor with double support.
Bearing: 4mm roller bearing to support the far side of the motor
Screws: x4 mounting screws with matching allen key
Safety: Fingertech weapon lock
 
Specifications
Weight: 124grams
Drum diameter: 61.5mm tooth-to-tooth
Voltage: 7.4V - 11.1V
 
Responsibility
It is dangerous to add a weapon to a robot. Never power up the robot outside of a specifically built test-box or arena. Always use the provided safety lock and follow proper activation procedure. All screws have been threadlocked and should not be removed. Wear and tear is anticipated, however the kit should be returned in working condition. This weapon kit needs to be returned immediately following the final tourament. To maximise the lifespan of this kit -
disable the weapon if it becomes jammed,
do not disassemble the weapon, and
use only within a test-box or combat arena.