NTN 6210LLU Deep Groove Ball Bearings , D=50 Plastic Cutting Nippers 8mm Impact Socket 960 9mm FD 320 F 8mm Impact Socket 960 9mm Impact Socket 10mm Impact Socket 11mm Impact Socket 12mm Impact Socket 13mm Impact Socket 14mm Impact Socket 15mm Impact Socket 16mm Impact Socket 17mm Impact Socket 18mm Impact Socket 19mm Impact Socket 21mm Impact Socket Accessory Impact Extension Bar 75mmL Plastic Tray (1 6) Free Speed (rpm) 12 NTN provides deep groove ball bearings that are pre lubricated with grease and enclosed by seals or shields When two or more deep groove ball bearings are used in combination and mounted adjacent to each other a duplex set (D2) should be used