1) Stoning hammer with handle(wood handle, fiberglass handle). 2) 45# steel 3) hardened 42-48HRC Double face sledge hammer with handle : (1)MATERIAL : 45# ... : heat treatment, spray-paint,electrostatic spraying,chromeplate ,etc. (4) HANDLE : wooden(hickory, europen ash,ash , hardwood), fiber-glass,steel, ... Certification. Germany GS certification. FSC certification for wood handle, hickory handle and ash ...