... Material: Zinc alloy Thread: C45E4 Thread heat treated for anti-oxidation Color: Black,Orange,Grey 7018 Stainless steel handle with thread handle clamp lever knobWe ... insert , long knobs,adjustable handle , zinc alloy adjustable handle ,plastic adjustable handle ,bridge handle,stainless steel adjustable handle ,clamping lever handles,industrial handle, pull handle, position gauge,gravity gauge ...