Thank you for viewing. Type... Mini 4WD Wheel type: Small-diameter low-height (medium-diameter) fin wheels (carbon) Tire type: Black low-friction Tire diameter: Approximately 23.3mm [To the buyer] We have spent time adjusting the tires to maximize their performance. Power up your machine and get ahead of the competition! The tires were rotated with a rotary tool and chamfered with a 400-grit diamond plate file, then leveled with 1000-grit sandpaper, and finally finished carefully with gallium cleaner and a melamine sponge. Notes ・All parts are made using genuine Tamiya products. ・This is a handmade product. Please refrain from purchasing if you are sensitive to scratches, wobbles, or deformations that may occur during processing. Please also refrain from purchasing if you are particular about accuracy, as there may be errors in the measurement method due to the force applied by the calipers. We also sell various Mini 4WD parts. Please take a look.