1. Negative angle blade with holes

CN □ □ Type/80 ° Diamond

DN □ □ Type/55 ° Diamond

SN □ □ Type/90 ° Square

TN □ □ Type/60 ° Triangle

VN □ □ Type/35 ° Diamond

WN □ □ Type/80 ° Hexagonal

RN □ □ Type/Round

2. Non perforated negative angle blade

55 ° parallelogram

3. Perforated positive angle blade

CC □ □ Type/80 ° Diamond

DC □ □ type/55 ° withered shape

RC □ □ Type/Round

SC □ □ Type/90 ° Square

TC □ □ Type/60 ° Triangle

VB □ □ type/35 ° withered shape

4、For more information, please check HYW Ceneral Turning Inserts product brochure