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Exceedingly low quality. VERY noisy at all speeds and ever so slightly larger outside diameter than other 693ZZ bearings I have purchased which means they will NOT fit into standard fan bearing fittings. Plastic will go with force. With brass housings: you will only get it half way in. The biggest problem is the noise! Very low tolerances at manufacture or out-of-round bearing balls used.
Verified purchase: Yes | Condition: New
Good little bearings, the perfect addition to any hobby model steam engine builders supply cupboard.
Verified purchase: Yes | Condition: New
I'm an avid inventor and access to these products at an affordable price gives me more scope to work.
Verified purchase: Yes | Condition: New
Excellent value
Verified purchase: Yes | Condition: New