Premium 3/32 axles with precision ground gear and wheel flats, now with perfect balance with M472 Koford tires and the new Koford gears. Flats keep your wheels on, and compensate for the weight of the set screw for perfect balance. Because the flats do not extend to the end of the axle, your tire will stay on even if the set screw loosens. Machined to the exact length required and rounded, no trimming required, ultra precision fit in bearings to eliminate chatter, the ultimate in straightness.