External grooving GBA type Shallow grooving (Grooving depth: ~5 mm) Type KGBAS KGBA (-JCT) KGBS KGB Edge width (mm) 0.33 ~ 4.8 0.33 ~ 4.8 0.33 ~ 4.8 0.33 ~ 4.8 Max. grooving depth (mm) 0.8 ~ 5.0 0.8 ~ 5.0 0.8 ~ 5.0 0.8 ~ 5.0 G * These shallow groove types of the previous system will be switched to the system on the left. KGBS KGBAS KGB KGBA Grooving Ground chipbreaker Ground chipbreaker GM chipbreaker MY chipbreaker Full-R General (Square) Full-R (Round) GM chipbreaker MY chipbreaker Edge shape Deep grooving (Grooving depth : ~25 mm) Type KGHS KGH KGA Edge Width (mm) 4.0 ~ 8.0 4.0 ~ 12.0 3.0 ~ 5.0 Max. grooving depth (mm) 13 13 ~ 17 20 ~ 25 Ground chipbreaker Molded chipbreaker Molded chipbreaker G5