4 x 8 x 3 Ceramic Shielded Ball bearing, bearing is Chrome Steel, bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.

• Item: 4 x 8 x 3 Ball Bearing
• Type: Deep Groove Ball Bearing
• Balls: Ceramic Si3N4
• Material: Chrome Steel
• Closures: Metal Shields
• Lubrication: Self Lubricated (Grease)
• Dimensions: 4mm x 8mm x 3mm/Metric
• ID (inner diameter)/Bore: 4mm
• OD (outer diameter): 8mm
• Width/Height/thickness: 3mm
• Size: 4 x 8 x 3 mm
• Quantity: One Bearing