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radial and deep groove ball bearing
smooth motion at high speeds - perfect for spindles
SMSK40GUU Bearing
ID (inner diameter)/Bore: 4 1/2" Inch
or skateboards
30-Pack 6801 Full Ceramic ZrO2 Bearings 12x21x5mm Ball Diameter - 2 1/4 inch (2.25") radial and deep groove ball6801 Full Ceramic Ball Bearing ZrO2 Pack of 30 6801 Full Ceramic Ball Bearing, measures an inner diameter of 12mm, outer diameter is 21mm and the width is 5mm, a standard bearing size commonly used in a variety of industrial and commercial applications, Bearing is made from Ceramic. 6801 Ball Bearing Full Ceramic Ball Bearing Races Material: Zirconia (ZrO) Ceramic Balls: Made from Zirconia Ceramic (ZrO) Cage Material: PTFE (Polytetrafluoroethylene)