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. Specification: Outer Diameter: 19mm / 0.75" Inner Diameter: 6mm / 0.24" Width: 6mm / 0.24" Color: Black, Silver Tone Type: 626-2rs Precision Level: P5 Basic Load Ratings (kN): Cr:2.327 C0r:0.941 Limiting Speeds(min-1): Grease:79953 Oil:49988 Material:Bearing Steel and RubberPackage List:1 Pcs Deep Groove Ball BearingsNote: Please confirm the model number and dimension before buying, thanks!