61801 Full Ceramic Silicon Nitride Ball Beairng with 14 Si3N4 Ceramic Balls, this is a popular size that could be used in many applications that use this size 12mm x 21mm x 5mm.

• Item: 61801 Ball Bearing
• Type: Full Ceramic Silicon Nitride Ball Beairng
• Cage: PTFE
• Closures: Open
• Material: Full Ceramic Si3N4 (Silicon Nitride)
• Balls: 14 Ceramic Balls Si3N4 (Silicon Nitride)
• Dimensions: 12mm x 21mm x 5mm/Metric
• ID (inner diameter)/Bore: 12mm
• OD (outer diameter): 21mm
• Width/Height/thickness: 5mm
• Quantity: One Bearing