GENERAL TECHNICAL INFORMATION THREAD TURNING INSERTS DESIGNATION SYSTEM 1 INSERT SIZE 2 APPLICATION L (mm) IC 06 5/32" E – External I – Internal 08 3/16" UE – U, external 11 1/4" UI – U, internal 16 3/8" UEI – U, external and internal 22 1/2" 27 5/8" U-type Regular Type 3 HAND OF TOOL 4 TYPE R – Right hand M – Pressed chipbreaker L – Left hand " – No indication, regular type RL – Right hand, Left hand 1176