1.Material: 20Cr or 20CrMnTi 2. Surfacehardness:58-64HRC 3.Innerhardness:20Cror20CrMiTi 4.ModelNumber:5-279X,5-280X,5-515Xandsoon (asbuyers'requirements) 5.BrandName:We can engrave iton the goods according to each customers' requests 6.Reliablequality&Reasonableprice 7.Wecanproducethegoodsaccordingtobuyers'drawingsorsamples 8.Packing:accordingtocustomers'requestsorourfactory'sususalpacking innerpacking:plasticsacksandpaperboxes outpacking:bigcartonsandwoodenboxesorwoodenpalets