(4) 6801-2RS Premium Sealed Bearings,12x21x5mm, 61801 RS 6801-RS
Kit includes (4) 6801-2RS Bearings – 5 Year Warranty They are sometimes called 61801-2RS, MR6801-2RS 6801 RS Bearing Size: 6801-2RSDimension (d): 12mm Dimension (D): 21mm Dimension (B): 5mm Dynamic Load Rating: 429 LBS Static Load Rating: 233 LBS Limiting Speed (Grease): 21000 RPM Limiting Speed (OIL): 35000 RPM Weight: 0.01 LBS