6004 Full Complement Ceramic Silicon Nitride Ball Bearing, the inner diameter is 20mm, outer diameter is 42mm and the width is 12mm, Bearing is made of Silicon Nitride Ceramic.

• Item: 6004 Ball Bearing
• Type: Full Complement Ceramic Silicon Nitride Ball Bearing
• Cage: No Cage
• Balls: Si3N4 Ceramic (Silicon Nitride)
• Inner/outer races: Si3N4 Ceramic (Silicon Nitride)
• Dimensions: 20mm x 42mm x 12mm/Metric
• ID (inner diameter)/Bore: 20mm
• OD (outer diameter): 42mm
• Width/Height/thickness: 12mm
• Bearing Size: 20 x 42 x 12 mm
• Quantity: One Bearing