Merchandise Description For a variety of planer machines and even in accordance with your plans, our planer-knife items are created in various sizes. Material TCT (HM), HSS (T1, M2), D2, and DS. Hardness HRC 56–58, HSS, HRC 61–64 D2, HRC 58–61 DS, and HRC 56–58 Use TCT for cutting hardwood for greater performance and durability. HSS for hardwood and softwood cutting D2 & DS for softwood cutting Typical SpecificationsBusiness Type: Manufacturer/Factory & Trading Company Number o