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This drill bit is 12.5mm in diameter.

The drill bit is used for the following kits:
-Triton FP/RB (also requires 10.5mm drill bit)
-Triton Ballpoint (also requires 10.5mm drill bit)
-Atrax FP/RB (also requires 10.5mm drill bit)
-Atrax Ballpoint (also requires 10.5mm drill bit)
-Majestic Jr. FP/RB (also requires 10.5mm drill bit)
-American Patriot FP/RB (only drill bit needed)
-Electra (only drill bit needed)