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The machining on this eccentric sleeve is precise—it slid right into place on my SC4 lathe without any filing. Definitely beats the sloppy fit of some cheaper replacements I've tried.

I was relieved that this eccentric sleeve dropped right into my SC4 lathe with no binding or extra filing needed. The keyway lines up perfectly with the tailstock shaft, and the whole assembly feels solid now. It's exactly what I needed to get precise drilling alignment back.

The eccentric bore was machined cleanly with no burs, and it slid right into the tailstock without any adjustment needed. After a few test passes, the runout is minimal, so this replacement feels solid.