Specification Brand : ACROPIX BulletPoint : Bearings BulletPoint1 : Fitment:Mainly applicated on wheels for cars, bikes, motorcycles, karts, lawn mowers, skateboards, roller skates, tractors, 3D prints, snow blower etc. BulletPoint2 : Product Characteristics:Pre-lubricated, smooth and flat bearing surface, compact structure, with strong bearing capacity and dust-proof, long service time. BulletPoint3 : Specification:Outer Diameter: 130mm/ 5.12", Inner Diameter: 105mm/ 4.13", Width: 13mm/ 0.51", Type: 6821ZZ, Precision Level: P0, Basic Load Ratings (kN): Cr:19.8 C0r:23.9, Limiting Speeds(min-1): Grease:4800 BulletPoint4 : Easy / Professional Installation:Our ball bearing provide stable performance with quenching process, just press these low friction bearing evenly to prevent the bearing from tilting or skewing. They support both radial and axially loads under high speed. BulletPoint5 : Note:Please confirm the model number and dimension before buying, thanks! Color : Silver Tone ExternallyAssignedProductIdentifier : 4012802795165 ItemName : ACROPIX 6821ZZ Deep Groove Ball Bearings P0 105x130x13mm Lubricated Bearings Double Metal Seal Silver Tone Scooter Skateboard Wheel ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 5.31 inches ItemPackageDimensions_Width : 5.31 inches ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : ACROPIX Material : Alloy Steel ModelNumber : RASE90 NumberOfItems : 1 PartNumber : accar240717001659 ProductDescription : Product Characteristics: Pre-lubricated, smooth and flat bearing surface, compact structure, with strong bearing capacity and dust-proof, long service time. Single-row design, suitable for high-speed, low friction, low-noise and low vibration, improve efficient and steady work. High temperature quenching forging, sturdy and durable in operation, these deep groove ball bearings combine radial and load at high speed. Mainly applicated on wheels for cars, bikes, motorcycles, karts, lawn mowers, skateboards, roller skates, tractors, 3D prints, snow blower etc.