Insert Style: :CNMG Takes Insert: :CN..12 Shank Size (mm): :20×20 Approach Angle (): :95 Cutting Hand: :Left Grade: :M4PW Application: :External Turning ISO Code: :PCLNL2020-K12 Manufacturer Part Number: :EDG-10087H Brand: :MSC Edge PCLNL2020-K12 – External left hand turning tool holder with a 95 approach angle and takes a CNMG1204.. insert. This tool holder has a lever lock clamping system to secure insert during use.