This listing is for TWO (2) pieces of 1972ish Aurora AFX Non-Magnatraction or 4-Gear Specialty Non-Mag Chassis, Mated Ceramic Coated MOTOR MAGNETS. ONE PAIR. No idea what they gauss out at. I believe they also fit in the t-jet chassis. These Salvage parts from a large distributor stock of excess and return chassis. All are traveled and bruised but still very functional. Original Aurora Parts. 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.