This four-pack of 8-tooth injection-molded sprockets comes with two idler sprockets (with 1/4" holes) and two sprockets designed for use with Futaba servo splines. The track links and pins are sold separately.
Compare all products in Wheels, Tracks, and Ball Casters or Futaba Servo Wheels.
These 8-tooth, injection-molded sprockets are made to work with the rugged miniature tank tracks. This set comes with four sprockets made from sturdy, black ABS plastic: two sprockets for mounting on servos with Futaba splines, such as those on the SpringRC SM-S4303R and Power HD AR-3606HB continuous rotation servos, and two idler sprockets with 1/4" holes that you can mount using shoulder bolts.
The diameter of the sprocket by itself is 1.5". Once the rugged miniature tank tracks are around the sprocket, the total diameter is roughly 1.77".
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