GYRO DIN69880-ER : TungGyro Center Alignment Collet Chuck Holder for Lathe
  DesignationStockSSCSIDCONNWSDCONXWSLSLFLBDCSFMSBDBD_2BD_3GICATGIREMgiic
  GYRODIN6988030ER25 N/AVDI30 ER25 1.0016.0055.080.6535.5068.0042.0079.0074.004500410 0
  GYRODIN6988030ER32 N/AVDI30 ER32 2.0020.0055.081.6536.5068.0050.0079.0074.004500411 0
  GYRODIN6988040ER32 N/AVDI40 ER32 2.0020.0063.081.6536.5083.2050.0079.0074.004500412 0
  GYRODIN6988050ER32 N/AVDI50 ER32 2.0020.0078.081.6536.5098.0050.0079.0074.004500413 0

First-time users should buy a GYRO kit which includes a test bar and a bushing for performing the alignment procedure.