Specification Brand : Tuwei BulletPoint1 : Excellent Performance: Our 8 wheels trolley assembly have impact resistance and galvanized properties, providing rust protection. It also has a sturdy bearing steel pin shaft in the pillar channel. BulletPoint2 : Silent Operation: The pulley uses deep groove ball bearings to ensure smoothly operation without generating any noise. BulletPoint3 : Carbon Steel Material: The pulley is made of high strength carbon steel, with high hardness, robustness, and impact resistance. CNC accuracy machining technology, full penetration welding. Two 8 wheel trolley components with a load capacity of up to 2700 pounds. BulletPoint4 : Widely Applicable: The pulley assembly can be used for household moving doors, wardrobe cabinets, large iron doors, curtains, automation equipment pulley assemblies, factory track pulleys, etc. BulletPoint5 : Strong Stability: Assembled using an 8 bearing wheels with welded bearings and pin shafts, it has stronger stability and is safe to use. Color : Silver 1 ExternallyAssignedProductIdentifier : 7908187697750 ExternallyAssignedProductIdentifier1 : 0840403740895 ExternallyAssignedProductIdentifier2 : 840403740895 IncludedComponents : wheel ItemName : 2Pcs 8 Wheel Trolley Assembly, Silent Trolley Roller, Hoist Trolley Assembly for Curtains, Moving Doors, Cabinets, Track Pulleys, Automatic Equipment Pulley ItemPackageDimensions_Height : 16 centimeters ItemPackageDimensions_Length : 22 centimeters ItemPackageDimensions_Width : 17 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : beam-trolleys Manufacturer : Tuwei Material : Stainless Steel ModelName : Tuweipgacgzyfrn ModelNumber : Tuweipgacgzyfrn NumberOfItems : 1 PartNumber : Tuweipgacgzyfrn ProductDescription : Spec: Item Type: 8 Wheels Trolley Assembly Material: Carbon Steel Application: Can be used for family activity doors, wardrobes, large iron doors, curtains, automation equipment pulley components, and factory track pulleys.