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LUNEZY Heavy Duty Pulley Sliding Gate Roller Wheel Double Bearings H Groove,Iron Square Tube Track for Furniture,Inverted Track,Industrial Machine,Rolling Gate,Pack of 2(95mm/3.7in)
Features: Built-in dual bearings, high-speed rotation, good sliding and stability, can reduce friction with the wheel, reduce vibration, reduce noise, and run smoothly. Material: The track wheel is made of high-quality iron, fixed guide rail, not...
https://www.bizrate.co.uk/homehardware/lunezy-heavy-duty-pulley-sliding-oid37293859850.html