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The machined fit on this 01403 is tight enough that there’s zero play once it’s clamped down, which is exactly what I needed for a small hobby build. Took a bit of fiddling to align, but once seated it hasn’t budged.

I was worried about finding the right size for my build, but the standard 01403 variant matched the specs exactly. The coupling feels solid and well-machined, no wobble or play once installed.

Fits perfectly into the standard 01403 config without any fiddly re-drilling, which is exactly what I needed for this project. The machining tolerances look tight, and it hasn't shown any wobble under load so far.