This listing is for ONE (1) 1970-1973 Aurora Factory Experimental AF/X NON MAGNATRACTION WEIGHTED, SEARS SUPER TRACTIONS HO Slot Car CHASSIS. Super Traction was a SEARS exclusive feature for their branded race sets. The additional front end weight, helped keep the guide pin down in the slot ! Rare to find as unused. These came from a large lot of recently surfaced new old stock, AFX inventory, from the Aurora Downey California, distribution headquarters. Tires are original and DRY. Tested to run on an 18v tan Model Motoring transformer. These are tested to have all their parts, the model motoring mechanics are up to you. 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.