Preamer 2 PCS 50mm U Groove Nylon Ball Bearing Guide Pulley Wheels Roller Pulleys for Lifting 6, 8,10mm Rope, 608zz

Deep groove ball bearings, fashionable, slide flexible, compression wear. Suitable for furniture hardware accessories, mobile doors, glass sliding doors, aluminum doors and w Internal lubrication grease, smooth operation, good mute effect,compression wear.【CARRYING CAPACITY】: Approx. 40kg,You can also replace the wheels on the dolly that use skate/skateboard wheels with a 8mm center bore Suitable for furniture hardware accessories, hey can be widely used in doors and windows to track and drive mechanical equipment. Set of 2 pics !Product Size: 8mm(ID)*50mm(OD)*12mm(Thickness),