... , 2RS, RS, OPEN, etc. 2) Other non standard deep groove ball bearings, with inner size over 10mm Above bearings with ZZ ... . 3. Grade: ABEC1 ABEC3, ABEC5, ABEC7 4. Application: Motorcycle, Motor, Pump, Fan, Air conditioner, Microwave Oven, Range hood, Sewing machine, Massage ...