Fits 6u0026#34; curved blade hand augernDesigned for durabilitynCNC ground high carbon martensitic stainless steelnEasy replacement with all mounting hardware includednSold as pairnThe Eskimo 15850 Silvertip blades are formed from a high carbon martensitic stainless steel used most often for knife blades. The hardness and wear resistance of the Silvertip blades are further enhanced by post forming heat treatment.