4PCS Nylon Round Plasic Pulley U Groove Track Roller Bearing Pulleys Wheel Roller for Sliding Door Window Lifting Systems

Quietness:This bearing roller is manufactured with precision, it is very quiet and noiseless when used, and it slides flexibly.

Compression wear.: made of high quality engineering plastics, anti-pressure and wear-resistant, long service life.

Suitable for furniture hardware accessories, mobile doors, glass sliding doors, aluminum doors and windows.

This u groove pulley is widely used in doors and windows to track and drive mechanical equipment. There are total 4 pieces of pulleys in one set that you many use for many projects.

Product Size: 6mm(ID)*28mm(OD)*8.4mm(Thickness)

【Feature】Smooth motion, high printing precision, low noise, can greatly improve the printing speed.U Shape groove ball bearings, fashionable, slide flexible, compression wear.

【Wide Application】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.