h M hardened steel 500013424 robust and Verschleißarmes Pinion Gear made from hardened steel with set screw for stability when used on the motor shaft. Teeth: 16 Z: 0.6 Module 0.4 Pinion Suitable for Formula/TA03/TA04/TB01 Tamiya chassis. 0.6 Module sprocket suitable for e.g. TT/TT 01 type E/Tt – 02 and other Tamiya Standard Chassis. MODULE 0.8 sprockets fit for Tamiya off-road chassis. Caution: Please always Manufacturer Specific details to make module Specifications. Warning: Not suitable for children under the age of 14 years of age.