... plug 1>Material:rion ,brass,stainless steel,zinc 2>Size:OD*Thickness30mm*1.5mm stainless steel water plug 1>Material:rion ,brass,stainless steel2 ... mainly manufacture various of water jacket plug with brass,stainless steel, Galvanization ,iron etc.Second:Our water jacket have been exported ... more details.Give a near look of our products: stainless steel water plug