We can assure customers of its high quality. All the production are available in open-end spinning machine.We mainly supply the market with three types Type: 112 - 12 - C 112 - 9 - C 112 - 6 - C Max.R.P.M 120000r/min 90000r/min 60000r/ min Note with the ceramic ball Bearing Inner Diameter 8.9mm 8.9mm 10mm For Spinning Machine Type: Riter BDSI BDA10/10N BD20 BDK BDSD BT902 BT903 BT905 BT923 Saurer BD320 BD330 BD350 Rifa RFES10 RFRS20 RFRS30 Taitan TQF268.