set of 16 Deep Groove Radial Ball Bearings and they are inline skate quality, bearings are blacked and bearings have nylon cage that would make them faster.Bearings have 2 Removable yellow Seals, Made from high-strength chrome steel for durability and performance, each bearing has 2 Removable yellow Seals to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with oil.

• 608-2RS Ball Bearings
• Deep groove ball bearings
• Closures: 2 Removable yellow Seals
• Dimensions: 8mm x 22mm x 7mm/Metric
• Inner Diameter: 8mm
• Outer Diameter: 22mm
• Width: 7mm
• Size: 8 x 22 x 7 mm
• Quantity: 16 Ball Bearings