IHSR-BW : Back face turning tools used on BHR and TCH rough boring heads.
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  DesignationSSd mind maxD1Hfl1GICATGIREMgiic
  IHSR 20- 24 BW BHR MB16-1620.0024.0016.0027.508.016.004652465 0
  IHSR 23.5-30BW BHR MB20-2023.5030.0020.0032.509.519.504652469 0
  IHSR 29.5-40BW BHR MB25-2529.5040.0025.0039.0012.024.004652478 0
  IHSR 39- 52 BW BHR MB32-3239.0052.0032.0050.0014.032.004652490 0
  IHSR 51- 70 BW BHR MB40-4051.0070.0040.0063.5017.542.004652502 0
  IHSR 69- 92 BW BHR MB50-5069.0092.0055.0080.5021.057.004652512 0
  IHSR 91-122 BW BHR MB63-6391.00122.0072.00100.5025.076.004652517 0
  IHSR 121-162 BW BHR MB80-80121.00162.0095.00110.5028.0101.004652522 0
  IHSR 161-802 BW BHR MB80-80161.00802.0095.00110.5028.0122.004652527 0

D1= Size of the boring head being used dmin= (min bore diameter)= (dmax+D1+1)/2