3 Kind Of 3/4'' Thick Reducing Bushing Adapters Id 1/2'' Od 5/8'' | Id 5/8'' Od 3/4'' | Id 3/4'' Od 1'' For Reduced Diameter Arbor Hole Of Bench Grinding Wheel Or Sanding Wheel 3 PCS

They came out of the package in perfect condition. They are machined to the thousandths. I will definitely buy and recommend

The ID/OD seem to be +/- 0.01, so there is some slop when nested. Not a problem in my application, but it may cause destructive vibration on a grinder or other rotary tool. I did have to turn down the OD from 1.005 to 0.994 for it to fit in the tube. Also, they weigh exactly 2oz stacked together.

Sizes are excellent. I liked it very much, thank you

The steel bushings for centering the grinding wheel are better then the plastic ones

While it took 1 attempts to get the 3/4 inch depth bushings (the first set I got delivered was 1 inch) - Amazon was quick about the exchange. The set is pretty decent. I have not experienced any really noticeable wobble using these on my old Milwaukee bench grinder. A prior attempt using a nylon bushing - probably not as snug - produced a disturbing amount.So while these are kind of no-brand generic items - they seem fairly well machined.

Well-machined & burr-free. OD / ID generally : -.002 / +.002, respectively, if not better.

I got measurements that show tighter tolerances than others. Still, when added up, it seemed like a lot of play. Not sure how much it matters. B. Y.

I returned these because the clearance between spacers was just too much for me. They were not tight together. Maybe a half millimeter between sizes. I thought they were too loose.