colour case pressure gauge for pressure regulator dial : 1.5' , 2',2.5'color case: blue ,red ,blackthread : 1/4 ,3/8,NPT,BSPT,M12 X 1.5movement: copperwindow : polycarbonateconnection: bottompressure range : from 4bar to 315bar packing : 100pcs box in one carton pls note :if you need the pressure more then 250bar ,we will give you silver welding ,it prevent leaking