Deep-Groove Ball Bearings Nylon Plastic Pulley U Shape Groove Wheel 8x40x10 Guide Bearing Pulley Rail Ball Wheel Black 1Pcs,(Aicosineg)
- Smooth motion, high printing precision, low noise, can greatly improve the printing speed.U Shape groove ball bearings, fashionable, slide flexible, compression wear..
- Widely used in transmission, instrumentation, electrical, household appliances, internal combustion engines, transport vehicles, agricultural machinery, construction machinery, engineering machinery, roller-skating shoes, yo-yo, etc..