齒輪，2段變速後軸，X3銑床，金屬 出清

The 23-tooth and 15-tooth gear set was exactly what I needed for my X3 mill's rear shaft, and the 14mm bore with the 5mm keyway fit perfectly without any filing. It spins smoothly at both speeds, and for a clearance item this precise, I couldn't be happier.

The 23-tooth large gear and 15-tooth small gear fit perfectly on my X3 mill's rear shaft, and the 14 mm bore with keyway lined up without any fuss. Machining feels smoother now with the 2-speed range available. Exactly what I needed.

I was worried about alignment, but the 20.7 mm thickness fit perfectly on the X3 mill's rear shaft and the 14 mm bore matched up without any play. The two speeds are a real timesaver when switching between roughing and finishing cuts.