Spark Plug Wrench 1.Material:45#carbon steel/CR-V 2.Surface:chrome plated 3.Size:16mm\21mm Spark Plug WrenchDetailed information Material:45#carbon steel,A3,CRVHardness:HRC30°C-40°CSurface:Chrome plated,sandblast,knurling,polished,zincTreatment:knurling,polished,sandblast,heat treatment etc The handle is in plastic dipped and any color is optional. Packing: Tie on card, skin card packing, blister ...