Slot car racers and hobbyists, fine-tuning your car's handling? These NSR axle spacers are a tiny but crucial detail. Part number 4853, this pack contains 10 plastic spacers. They have a 3/32\ inner diameter to fit the axle, and each spacer is .079 inches (or 2.00mm) thick. Made in Italy by NSR, a respected brand in the slot car world. You use these spacers on the axles between the chassis and the gear or wheel to set precise gear mesh and control side-to-side wheel movement (endfloat). Getting this adjustment right reduces friction, improves power transfer, and makes your car smoother and faster. A must-have for serious tuners building for competition or just wanting the best performance from their scale racers. Keep your slot car running silky smooth with proper spacing.