They work exactly like the catalog says
0 mm High Carbon Steel 150 - 280 m/min 0
ensuring high-gloss surfaces and dimensional accuracy
This prevents "re-cutting" of chips and ensures a mirror-like finish during CNC machining
GMM2020R-TK-8D PR930 (10pcs) 316 stainless They work exactly like thePVD Coated Carbide: PR930, Designation: GMM2020R TK 8D PR930 inch: 0. 079, mm: 2. 0 , RE: 0. 008 INSL: 0. 787, S: 0. 169,Angle: 8,Carbon Steel Alloy Steel: Light Interruption 1st Choice ,Stainless Steel: Light Interruption 2nd Choice,Hard materials: Continuous 1st Choice, Color: Reddish Gray , Coating Main Component: iAlN , Advantages: Application: Low machining speed, precise machining with sharp edge