608 Full Ceramic Ball Bearing, the most common size in skate business is 8mm x 22mm x 7mm, the inner diameter is 8mm, outer diameter is 22mm and the width is 7mm, this is a popular size that could be used in many applications, Bearing is made of Ceramic.

• Item: 608 Ball Bearing
• Type: Full Ceramic Ball Bearing
• Inner/outer races: Si3N4 Ceramic (Silicon Nitride)
• Balls: Si3N4 Ceramic (Silicon Nitride)
• Cage: PTFE
• Dimensions: 8mm x 22mm x 7mm/Metric
• ID (inner diameter)/Bore: 8mm
• OD (outer diameter): 22mm
• Width/Height/thickness: 7mm
• Size: 8 x 22 x 7 mm
• Quantity: One ball bearing