This listing is for ONE (1) HO Slot Car, 6 Tooth Motor Pinion Gears. It was designed and manufactured in France for the Ideal Majorette MK3 and MK4 style Slot-less chassis. It works in the rear, as well as front shaft in the TCR's. It also fits many other 1.5mm / .06" armature shafts and could possibly replace tough to find pinions like the 1981 Ideal Toy Corp. Slotted chassis, TycoPro, Tyco HP series, 1970's TYCO Command Control TCR, 1990s TYCO TCR, Matchbox Speedways, OTHERS; However, it is a generic gear and may not perform ideally on every chassis style; results will vary. Teeth and over all length may also prove to work in various degrees. Please consider it an Experimental gear and results will vary. Material is very durable, but spun gears is the way it goes, and there are no guarantees to individual results. Users comments good an bad will be noted in future edits. Have Fun and Thanks to Philippe! Bob at Slot Car Central in Syracuse ny Note: center hole is not precise, off just a bit. In typical use, this is not a deal breaker, but is not an ideal remake. Sold as is. Buy with confidence please check out my other offbeat slot car related items. Descriptions are very accurate; No Returns. PLEASE ASK 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. ************** From I Only ship U. S. Postal Service PRIORITY MAIL TO THE USA due to previous 'lost' packages. ******************* I charge $2 for expert handling/packaging, actual shipping. I ship out of the country almost daily. Please refer to my feedback, rating or time selling HO slots for assurances of a good honest deal. happy motorin' thanks S'lots from Bob. We Know H.O.