Top Plate Wheel 25mm Diameter A caster wheel with assembly hardware for Chassis-3.
Top Plate Wheel 50mm Diameter Simple, cost effective free wheel for your robot base
Pololu Ball Caster with 1″ Plastic Ball This light ball caster uses a 1″ diameter plastic ball. The height of the assembled kit ranges from 1.1″ to 1.4″. Dowel pins are used to minimize the friction between the ball and the ABS housing.
Single Chassis Completion Kit for RRC01A This discounted combination of Tamiya’s twin-motor gearbox, ball caster, and truck tires is meant for use with one Pololu round robot chassis.
Ball Caster Metal - 1/2" This ball caster uses a 1/2" diameter metal ball. The height of the assembled kit ranges from 0.5" to 0.8".
Ball Caster Plastic - 3/8"
Ball Caster Omni-Directional Metal A metal caster used for omni-directional robots.
Ball Caster Metal - 3/8" This ball caster kit from Pololu includes a black ABS housing, a 3/8" diameter metal ball, two spacers (1/16" and 1/8" thick), and two #2 screw sets.