Oil Pressure Gauge Fitment Size : 2" / 52mm Dashboard Hole Range = 0-45 psi Bezel : Chrome Case : Metal  Face : Black / White Letters Glass Lens Mounting : Screw in / Engine Mounted (No Studs) Fits IH / Farmall Tractors:  A, B, F12, F14, F20, F30 series. IHBL-OP-CR