BT-ER collet chuck : ER collet chucks with BT shank
RUN OUT-3                                           TAPER TOLERANCE                                     HARDNESS-60                                         ROUGHNESS                                          
  DesignationStockSSCSIDCONNWSDCONXWSLFLBLB_2BDBD_2JCRKSGICATGIREMgiic
  BT30ER16X70   AvailableBT30 ER16 0.5010.0070.0048.00-28.00-M10 M12 4510001 Balanced to G6.3 at 12,000 min-1 0
  BT30ER20X70   AvailableBT30 ER20 1.0013.0070.0048.00-34.00-M12 M12 4510002 Balanced to G6.3 at 12,000 min-1 0
  BT40ER11X100M   AvailableBT40 ER11 0.507.00100.0073.00-16.00-M6 M16 4505472 ER11 mini collet chuck Spec. 0
  BT40ER16X70 AvailableBT40 ER16 0.5010.0070.0043.00-28.00-M12 M16 4510003 0
  BT40ER16X100 AvailableBT40 ER16 0.5010.00100.0073.00-28.00-M12 M16 4510011 0
  BT40ER16X150 AvailableBT40 ER16 0.5010.00150.00123.0086.0028.0040.00M12 M16 4510004 0
  BT40ER16X150B AvailableBT40 ER16 0.5010.00150.00123.0086.0028.0040.00M12 M16 4511471 0
  BT40ER16X200 AvailableBT40 ER16 0.5010.00200.00173.00110.0028.0040.00M10 M16 4511420 0
  BT40ER20X70 AvailableBT40 ER20 1.0013.0070.0043.00-34.00-M12 M16 4511489 0
  BT40ER20X70B AvailableBT40 ER20 1.0013.0070.0043.00-34.00-M12 M16 4511490 0
  BT40ER20X100 AvailableBT40 ER20 1.0013.00100.0073.00-34.00-M12 M16 4510005 0
  BT40ER20X120 AvailableBT40 ER20 1.0013.00120.0093.00-34.00-M12 M16 4505421 0
  BT40ER20X150 AvailableBT40 ER20 1.0013.00150.00123.00-34.00-M12 M16 4510006 0
  BT50ER16X100   AvailableBT50 ER16 0.5010.00100.0062.00-28.00-M12 M24 4510008 Balanced to G6.3 at 12,000 min-1 0
  BT50ER16X125   AvailableBT50 ER16 0.5010.00125.0087.00-28.00-M12 M24 4501236 Balanced to G6.3 at 12,000 min-1 0
  BT50ER16X150   AvailableBT50 ER16 0.5010.00150.00112.00-28.00-M12 M24 4510007 Balanced to G6.3 at 12,000 min-1 0
  BT50ER16X200   AvailableBT50 ER16 0.5010.00200.00162.0085.0028.0040.00M10 M24 4511451 Balanced to G6.3 at 12,000 min-1 0
  BT50ER20X100   AvailableBT50 ER20 1.0013.00100.0062.00-34.00-M12 M24 4510009 Balanced to G6.3 at 12,000 min-1 0
  BT50ER20X125   AvailableBT50 ER20 1.0013.00125.0087.00-34.00-M12 M24 4501242 Balanced to G6.3 at 12,000 min-1 0
  BT50ER20X150   AvailableBT50 ER20 1.0013.00150.00112.00-34.00-M12 M24 4510010 Balanced to G6.3 at 12,000 min-1 0
  BT50ER20X200   AvailableBT50 ER20 1.0013.00200.00162.0085.0034.0050.00M12 M24 4511460 Balanced to G6.3 at 12,000 min-1 0
  BT30ER25X60   AvailableBT30 ER25 1.0016.0060.0038.00-42.00-M16 M12 4500634 Balanced to G6.3 at 12,000 min-1 0
  BT30ER32X60   AvailableBT30 ER32 2.0020.0060.0038.00-50.00-M18x1.5 M12 4509001 Balanced to G6.3 at 12,000 min-1 0
  BT30ER32X75 AvailableBT30 ER32 2.0020.0075.0038.00-50.00-M18X1.5 M12 4501189 0
  BT40ER25X60 AvailableBT40 ER25 1.0016.0060.0033.00-42.00-M16 M16 4511416 0
  BT40ER25X100 AvailableBT40 ER25 1.0016.00100.0073.00-42.00-M16 M16 4511476 0
  BT40ER25X150 AvailableBT40 ER25 1.0016.00150.00123.00-42.00-M16 M16 4511478 0
  BT40ER32X60 AvailableBT40 ER32 2.0020.0060.0033.00-50.00-M22X1.5 M16 4509002 0
  BT40ER32X100 AvailableBT40 ER32 2.0020.00100.0073.00-50.00-M22X1.5 M16 4509003 0
  BT40ER32X120 AvailableBT40 ER32 2.0020.00120.0093.00-50.00-M22X1.5 M16 4505420 0
  BT40ER32X150 AvailableBT40 ER32 2.0020.00150.00123.00-50.00-M22X1.5 M16 4509004 0
  BT40ER40X80 AvailableBT40 ER40 3.0026.0080.0053.00-63.00-M28X1.5 M16 4509005 0
  BT40ER40X100 AvailableBT40 ER40 3.0026.00100.0073.00-63.00-M28X1.5 M16 4509006 0
  BT40ER40X150 AvailableBT40 ER40 3.0026.00150.00123.00-63.00-M28X1.5 M16 4511419 0
  BT40ER50X90 AvailableBT40 ER50 10.0034.0090.0063.00-78.00-M28X1.5 M16 4509019 0
  BT50ER25X100   AvailableBT50 ER25 1.0016.00100.0062.00-42.00-M16 M24 4511481 Balanced to G6.3 at 12,000 min-1 0
  BT50ER25X150   AvailableBT50 ER25 1.0016.00150.00112.00-42.00-M16 M24 4511483 Balanced to G6.3 at 12,000 min-1 0
  BT50ER25X200   AvailableBT50 ER25 1.0016.00200.00162.0087.0042.0055.00M16 M24 4511485 Balanced to G6.3 at 12,000 min-1 0
  BT50ER32X100   AvailableBT50 ER32 2.0020.00100.0062.00-50.00-M22X1.5 M24 4509007 Balanced to G6.3 at 12,000 min-1 0
  BT50ER32X125   AvailableBT50 ER32 2.0020.00125.0087.00-34.00-M22X1.5 M24 4501235 Balanced to G6.3 at 12,000 min-1 0
  BT50ER32X150   AvailableBT50 ER32 2.0020.00150.00112.00-50.00-M22X1.5 M24 4509008 Balanced to G6.3 at 12,000 min-1 0
  BT50ER32X200   AvailableBT50 ER32 2.0020.00200.00162.0088.0050.0063.00M22X1.5 M24 4509009 Balanced to G6.3 at 12,000 min-1 0
  BT50ER40X100   AvailableBT50 ER40 3.0026.00100.0062.00-63.00-M28X1.5 M24 4509010 Balanced to G6.3 at 12,000 min-1 0
  BT50ER40X150   AvailableBT50 ER40 3.0026.00150.00112.00-63.00-M28X1.5 M24 4509011 Balanced to G6.3 at 12,000 min-1 0
  BT50ER40X200   AvailableBT50 ER40 3.0026.00200.00162.00-63.00-M28X1.5 M24 4509012 Balanced to G6.3 at 12,000 min-1 0
  BT50ER50X100   AvailableBT50 ER50 10.0034.00100.0062.00-78.00-M36X1.5 M24 4509013 Balanced to G6.3 at 12,000 min-1 0
  BT50ER50X150   AvailableBT50 ER50 10.0034.00150.00112.00-78.00-M36X1.5 M24 4509014 Balanced to G6.3 at 12,000 min-1 0

Add B for coolant through the flange.
Wrench is not included.