To fit some buggys cars and trucks with a 12mm hex. High grip and traction tyre with high impact hardened plastic wheel structure to ensure a long lasting wheel. These wheels have been glued to the wheel and ready to run. Includes foam inserts. Please check measurements below before ordering to help ensure a fit. 110mm External Diameter. 70mm Internal Diameter. 48mm Width. 12mm hex. Center hole diameter 4mm. Depth to 12mm hex is 23mm.