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 gain an advantage over others! The tires were rotated with a rotary tool and chamfered with a 400-grit diamond file, then finished to perfection with parts cleaner and a melamine sponge. Notes ・All parts are made using genuine Tamiya products. ・This is a handmade product created by an amateur. 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 other Mini 4WD parts. Please take a look.