MINR R 07-D050/068 (RADIUS) : MINR: Mini carbide boring bars with full radius for internal boring and profiling in Dmin = 5.0 - 6.8 mm
  DesignationdW+0.05/0fabrl1l2Tmax-rDminR/LGICATGIREMgiic
  MINRR07-190050D050 7.001.000.94.403.10.5035.0020.01.005.00R 6861026 0
  MINRR07-240050D060 7.001.001.85.303.20.5040.0025.01.806.00R 6861066 0
  MINRR07-290050D068 7.001.002.86.303.60.5045.0030.02.506.80R 6861067 0

The corner radius is less than 0.1mm