bolt Material: carbon steel,stainless steel Surface: Zinc plated,HDG,Plain Size:M6-M36 Thread:wood screw,machine screw boltMaterial: carbon steel,stainless steelSurface: Zinc plated,HDG,PlainSize:M6-M36Thread:wood screw,machine screwThe type according to your drawings. welded eye bolt,eye screw with plastic sleeve