Air Bearings
6801 Full Ceramic Bearing 12*21*5mm Material 6801 Ceramic 6801 Ball Bearings 1Pcs 
Model Number : 6801
Bearing Material : : Ceramic
Ball Material : : Ceramic
Bearing Sizes : : 12x21x5 mm
Inner Diameter : : 12 mm
Out Diameter : : 21 mm
Width : : 5 mm
Lubrication : : Free Running Free Grease
Bearing Type : : Full Ceramic Bearing