This is Yeah Racing 1.9 Inch Mass Aluminum Wheel and Tire Set 2 pcs For 1.10 RC Crawler. Yeah Racing has found the perfect blend of design and material and weight to bring you the best looking and strongest crawler wheels for your crawler. To suit 1.10 scale models however will not fit all. Please check measurements before purchasing. 95.26mm outer Diameter. 49mm inner diameter. 12mm hex. 36.74mm wide. 9mm depth to hex.