Rival Thumbscrews


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Does not work on Zeus! 

Finally a thumbscrew option for most Rival flywheelers!  Use the following list to determine which size you need:

  • Hera – 20mm: Almost perfect fit.
  • Khaos – 20mm: Really good fit, a little long, so it makes a cracking sound on the last turn, but doesn’t break anything important.
  • Nemesis – 25mm: Excellent fit.

Sold Individually.

Blasters should be modified at your own risk by an adult or with adult supervision. Modification of blasters may increase wear and reduce lifespan of blaster. Always wear eye protection. Never point at someone’s face. By purchasing, you agree that FoamBlast is not responsible for injury or damage caused by misuse or accidental usage.


Additional information

Weight .5 oz
Dimensions N/A