BT-ER-SHORT : Short ER collet chucks with BT MAS-403 form AD taper shanks
IT_BALANCE_20000 RPM                                IT_BALANCE GRADE                                    IT_RUN-OUT A0.003                                   IT_TAPER SHANK GRADE                                IT_SURFACE HARDNESS 58~60HRC                        IT_N5                                              
  DesignationSSCSId mind maxD3LL1GG1JkgGICATGIREMgiic
  BT30 ER 20 SHORT 30 ER20 1.0013.0025.0027.205.2M12 M25X1.5 M12 0.304653178 0
  BT40 ER 32 SHORT 40 ER32 2.0020.0040.0036.509.5M16 M40X1.5 M16 0.744651075 0
  BT50 ER 32 SHORT 50 ER32 2.0020.0040.0047.509.5M24 M40X1.5 M22X1.5 3.364651077 0
  BT40 ER 40 SHORT 40 ER40 3.0026.0050.0046.509.5M16 M50X1.5 M16 0.784651076 0
  BT50 ER 40 SHORT 50 ER40 3.0026.0050.0047.509.5M24 M50X1.5 M28X1.5 3.094651078 0

Add B for coolant through flange