About CCMT2(1.5) inserts: carbide material with PVD coating ,used for machining stainless steel and steel parts,60 degree Triple-cornered shaped turning inserts About the internal holder: material with forging process , strong and ,total length :180mm, 95 degree right hand internal turning holder Offer and faster cutting speed, low friction coefficient, good wear resistance Designed for Steel, cast iron and non-ferrous materials Used for turning and finishing on a wide range of materials Colour:black Material:alloy Package Contents: 1 set x lathe threading tool(The accessories are shown in the picture; color is random, don' accept the specified color) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.