FF FW : FEEDMILL, fast feed face mills using FF WOMT... inserts. Can run at very high feed rates of up to 3.5 mm/t at small DOC, resulting in very high metal removal rates.
COOLANT THROUGH TOOL 
  DesignationD1DapZLDaRd°Arbor NxcmKgAp BackGICATGIREMgiic
  FF FW D40-16-06-C 40.026.001.50435.0016.002.5A2000.161.003103244 0
  FF FW D50-22-06-C 50.036.001.50540.0022.002.0A2000.301.003104752 0
  FF FW D52-22-06-C 52.038.001.50540.0022.001.9A2000.34 3104754 0
  FF FW D50-22-09-C 50.029.202.00450.0022.004.0A5000.331.753103290 0
  FF FW D52-22-09-C 52.031.202.00440.0022.004.0A5000.261.753103424 0
  FF FW D63-22-09-C 63.042.202.00540.0022.003.0A5000.471.753103425 0
  FF FW D63-22-09-CP 63.042.202.00440.0022.003.0A5000.48 3104805 0
  FF FW D63-27-09-C 63.042.202.00550.0027.003.0A5000.571.753199204 0
  FF FW D66-22-09-C 66.045.202.00540.0022.002.8A5000.55 3103426 0
  FF FW D66-27-09-C 66.045.202.00550.0027.002.8A5000.641.753103824 0
  FF FW D80-31.75-09-C   80.059.202.00560.0031.750.5A5001.18 3103289 Japanese standard 0
  FF FW D80-32-09-C 80.059.202.00550.0032.002.0A5000.971.753103427 0
  FF FW D100-31.75-09-C   100.079.202.00663.0031.752.0B5002.31 3190403 Japanese standard 0
  FF FW D100-32-09-C 100.079.202.00650.0032.001.5B5001.321.753103954 0

The CP (Coarse Pitch) tools were designed to run 2.5 mm/tooth at 2 mm DOC, while the regular pitch cutter run at 3.5 mm/tooth at 1 mm DOC.