DIN69871-TUNGMAX : TungMax endmill chuck holders with DIN69871 shank
  DesignationStockSSDCONWSDCONNWSDCONXWSLFLBBDBD_2LSCWSADJRGAJCRKSCSPGICATGIREMgiic
  DIN6987140MAXIN20X95 AvailableSK40 20.006.0020.0095.0076.0051.0053.0069.013.00M16 M16 With coolant hole 4505390 0
  DIN6987140MAXIN32X106 AvailableSK40 32.006.0032.00106.0087.0069.0070.0083.013.00M16 M16 With coolant hole 4504295 0
  DIN6987150MAXIN20X105   AvailableSK50 20.006.0020.00105.0086.0051.0053.0069.013.00M16 M24 With coolant hole 4505391 Balanced to G6.3 8,000 min-1 0
  DIN6987150MAXIN20X105B AvailableSK50 20.006.0020.00105.0086.0051.0053.0069.013.00M16 M24 With coolant hole 4506252 0
  DIN6987150MAXIN32X100   AvailableSK50 32.006.0032.00100.0081.0069.0070.0084.014.00M20x2 M24 With coolant hole 4504051 Balanced to G6.3 8,000 min-1 0
  DIN6987150MAXIN32X100B AvailableSK50 32.006.0032.00100.0081.0069.0070.0084.014.00M20X2 M24 With coolant hole 4504569 0
  DIN6987150MAXIN32X135   AvailableSK50 32.006.0032.00135.00116.0069.0070.0085.014.00M20x2 M24 With coolant hole 4504924 Balanced to G6.3 8,000 min-1 0

Add B for coolant through the flange.