3 x 9 x 4 Ceramic Shielded Ball Bearing, Bearing is made of Chrome Steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, bearing is pre-lubricated with grease.

• Item: 3 x 9 x 4 Ball Bearing
• Type: Deep Groove Ball Bearing
• Balls: Si3N4 Ceramic
• Closures: 2 Metal Shields
• Lubrication: Self Lubricated (Grease)
• Dimensions: 3mm x 9mm x 4mm/Metric
• ID (inner diameter)/Bore: 3mm
• OD (outer diameter): 9mm
• Width/Height/thickness: 4mm
• Size: 3 x 9 x 4 mm
• Quantity: One bearing