Stainless Steel Ball Bearings with Ceramic Balls Premium ABEC-5 quality, this is a popular size that could be used in many application that uses this size 5mm 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 Premium ABEC-5 quality.

• Item: Double Shielded Ball Bearings
• Size: 5mm x 10mm x 4mm
• Type: Deep groove ball bearings
• Material: Stainless Steel
• Balls: Si3N4 Ceramic Balls (Silicon Nitride)
• Closures: Metal Shielded
• Lubrication: Self Lubricated with Grease
• Quantity: One Bearing