Pololu Wheel for Micro Servo Splines (21T, 4.8mm) - 40×7mm, Red, 2-Pack
These red plastic wheels have silicone tires and measure 40 mm (1.57″) in diameter. They mount onto micro servo splines with 21 teeth and a 4.8 mm diameter, such as the splines on FEETECH’s FS90R micro continuous rotation servos and FT90R digital micro continuous rotation servos. This product is a pair of wheels.
We have similar wheels available in different sizes and colors and with different spline compatibilities:
Alternatives available with variations in these parameter(s): size color shaft type
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This file contains dimension diagrams for the 40×7mm, 60×8mm, 70×8mm, and 90×10mm Pololu Servo Wheels.