60mm wheels double-layer aluminum plate set Mecanum wheel chassis 25.5cm long and 15cm wide. The chassis is made of sturdy and durable aluminum alloy. The 60mm wheels are manufactured by injection molding process, not 3D printing. The kit includes: 2x aluminum alloy base plate (one with motor holes) 4x Mecanum wheels 4x TT motors with gears All necessary standoffs and screws https://elecena.pl/product/23275521/ultrasonic-obstacle-avoidance-mecanum-wheel-4wd-smart-car-chassis-kit 2023-04-22 https://elecena.pl/product/23275521/ultrasonic-obstacle-avoidance-mecanum-wheel-4wd-smart-car-chassis-kit 2025-10-29