I wanted to try some drifting, so designed this wheel. It takes a good 2 hours to print each one. Here are the specificiations: Outer Diameter: 90mm Inner Diameter: 80mm Hub Diameter: 24mm Hex Adaptor: 12mm (Works with Adapters uploaded by other user. 7mm version Hub Offset:13mm These Specifications provide sufficient clearance for my HSP Bronto control and steering arms etc. This wheel is already in revision 5 and now works 100%. Designed with ease of printing in mind.Print Face Down. Support material is only required for the internal hex and outer brim.