Stainless Steel Ball Bearings with Ceramic Balls ABEC-5 quality, this is a popular size that could be used in many application that uses this size 3mm x 10mm x 4mm. Bearings are made of Stainless Steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, Ceramic Balls are the highest standard of balls that can make your bearings live at least 5 times more than any other bearings, with ABEC-5 quality, nothing could be better !

• Item: Double Shielded Ball Bearings
• Size: 3mm x 10mm x 4mm
• Dimensions: 3*10*4 mm/Metric
• ID (inner diameter)/Bore=3mm
• OD (outer diameter)=10mm
• Width/Height/thickness=4mm
• Type: Deep groove ball bearings
• Material: Stainless Steel
• Balls: Si3N4 Ceramic Balls (Silicon Nitride)
• Closures: 2 Metal Shields
• Lubrication: (Dry)
• Quantity: One Bearing.