Mxfans RC 1:10 On-Road Racing Car Black Leaves Pattern RC Rubber Tyre & Gold Aluminum Alloy 10-Spoke Wheel Rims Pack of 4 Suitable for RC 1:10 On-road Racing Car Hexagonal joints is 12 mm There is sponge inserted for every tyre Note: The tyres and wheel rims are separated, you need to assemble and glue them together by yourself.