مجموعة تغيير التروس، مخارط طاولة، معدن

The box showed up with all eight gears, and the 49-tooth one slid onto my SC4 thread dial without any fuss. I've already cut a few metric threads and the mesh feels solid, no wobble or backlash issues.

The 80-tooth gear was exactly what I needed for finer threading on my lathe. Each gear slides on smoothly without any wobble, and the metal feels solid.

I was worried about swapping gears on my C4, but the 49-tooth and 80-tooth fit the shafts without any wobble or forcing. The set covers every thread pitch I've needed so far, and the metal feels solid enough to last years of hobby work.