10 bearings Stainless Steel Ball Bearings with Ceramic Balls ABEC-5 quality, this is a popular size that could be used in many fishing reels or any 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, also bearings are pre-lubricated with Oil (not grease), Ceramic Balls are the highest standard of balls that can make your bearings live at least 5 times more than any other bearings.

• Item: Double Shielded Ball Bearings
• Type: Deep groove ball bearings
• Material: Stainless Steel
• Balls: Ceramic
• Shields: 2 Metal Shileds
• Lubrication: Self Lubricated (Oil)
• Size: 3 x 10 x 4 mm
• Quantity: 10 Bearings
• Packing: 10 bearings in One plastic tube
• Equal: 623ZZ, R-1030ZZ, 623-2Z