Yootop Thread Coupling Sleeve Height Review

Drilled/drilled too large and off center, threads barely visible, no points. They go up to 11.25mm and for M12 it should be 10.7mm. This is marriage. This good review is either fake or lucky

I find Revain and the US in general to be a good dumping ground for out of tolerance machine parts. They are not drilled in the middle. The coupling is not one, but in the middle, and the thread is slightly larger than M6. Machine thread cutting with an off-centre hole produces very eccentric threads. Poorly done and sent to Revain to a metal recycling plant instead.

So I bought these because another customer said they were 12x1.5. It's not like this. They are 12 x 1.75, large carvings. But my 1 star isn't because of that, the themes themselves are terrible. As if the inner hole was too big before they were tapped. Even if it was the right thread, I wouldn't use them. Where the tips of the thread should be, there shouldn't be any flat spots.