Specification Brand : XHTLLO BulletPoint : Darmaya Trolley Pole, 1 Rear Spring Type, 2 Bases, HO Gauge BulletPoint1 : Steel Material: Utilization of premium carbon steel and stainless steel materials enables greater durability against rusting BulletPoint2 : Flat Sliding: 4 wheel design ensures flat rolling performance with good stability, and the operation is very safety and easy with low noise BulletPoint3 : Good Structure: Trolley roller adopting rolling bearing, the trolley assembly has been through fine welding and CNC crafting to form highly sturdy structure BulletPoint4 : Easy to Install: Sliding door roller comes with a compact size and a light weight as well, the trolley roller is very convenient to install within several minutes BulletPoint5 : Extensive Uses: Pulley sliding roller allows for wide application on home movable doors, wardrobe, large iron doors, curtains, automatic equipment components, etc Color : Black ExternallyAssignedProductIdentifier : 8720845541408 FinishType : Finish IncludedComponents : inc ItemDisplayDimensions_Depth : 15 inches ItemDisplayDimensions_Height : 4.7 inches ItemDisplayDimensions_Length : 2.64 centimeters ItemDisplayDimensions_Width : 22.8 inches ItemName : XHTLLO 4 Wheel Trolley Assembly, High Bearing Rolling Trolley Assembly Roller, Flat Sliding Wheel Sliding Pulley, Bearing Pulley Assembly, Rolling Bearing Accessory ItemPackageDimensions_Height : 8 inches ItemPackageDimensions_Length : 60 inches ItemPackageDimensions_Width : 6.2 inches ItemPackageQuantity : 1 ItemShape : Heart ItemTypeKeyword : beam-trolleys LoadCapacity : 1197.1 Pounds Manufacturer : XHTLLO ManufacturerMinimumAge : 180 Material : Material ModelName : Dolly Trolley 2 Pcs Furniture Roller Board Platform Black Polypropylene vidaXL ModelNumber : 3143921 NumberOfBoxes : 2 NumberOfCompartments : 1 NumberOfItems : 2 NumberOfWheels : 4 PartNumber : XHTLLO15kvimyge0 Pattern : Bordered ProductDescription : Specification: Item Type: Trolley Assembly Material: Carbon steel, stainless steel. Color: Silver Use: It can be used for home movable doors, wardrobe, large iron doors, curtains, automatic equipment pulley components, and factory track pulley.