F E R T I L I Z E R   K N I V E S

Carbon steel (mild steel) tube       outside diameter - 12.0mm         thickness - 2.0mm Carbon steel C1045 tube protector 65 Mn heat treated shank       spring same as AISI 1066         hardness - HRC 38 to 44 Chrome carbide point      Chrome content -  26 - 28%        Hardness -  HB 450 Parts welded together and surface painted black