This Listing is for TWO (2) Newly made Better Than Original, replacement Front WHEELS for an Aurora Model Motoring Thunderjet, The Tuff Ones style chassis. They will fit on a regular Aurora Thunderjet style 1/16" (0.0625") axle, The Wheels are designed to Press On. If someone wants on wheel to spin freely, they will need to ream out the axle hole slightly on one wheel. Sold as is. Descriptions are very accurate; No Returns. PLEASE ASK QUESTIONS BEFORE YOU BUY IF YOU ARE UNSURE. We ship promptly professionally. We happily combine orders refund any excess s/h immediately upon shipping. We can always provide tracking. I charge $1 for expert handling/packaging, actual shipping. We ship out of the country almost daily. Please refer to our feedback, social media or time selling HO slot cars for assurances of a good honest deal. Happy motorin' thanks S'lots from Bob at Slot Car Central in SYR. We Know H.O.