... .002mm We supply: Round Tungsten carbide punch, Flat cemented carbide punch, Standard cemented carbide punch, Non-standard cemented carbide punch.Materials of cemented carbide punch:SKH51, SKD61, SKD11,etc ... and smaller holes stabilizing the molds,etcAccuracy: ±0.002mm.Good wear resistance , toughness , hardness and intensity .High temperature resistance ,Corrosion-resistant. Cemented carbide punch