40Cr STEEL MOTOR GEAR 21T（32 PITCH,MODULE: 0.8MM,MOTOR TOOTH DIAMETER: 3.175MM） MG321T/0.8M
Suitable For GPM RACING-SCALE ACCESSORIES
Packaging Includes:
Motor Gear 21T-1PCS
Screw Shaft 3x3-2PCS
Part location:
Motor Gear
Product major functions & usage:
Connect with the motor and carry the motor to run
Major advantages of upgrading to this part/product:
(1) Made of 40Cr Steel, hardening black treatment,stronger than the original gear, wear-resistance and better transmission.     
(2) Number of teeth: 21T, 32 Pitch, module: 0.8mm, Motor tooth diameter: 3.175mm, round-shaped motor gear hole, tooth surface outer diameter: 13.5mm, all motors suitable for this data can be used.