Euro Black 2" Trim Gauge f/ Mercury/Mariner/Mercruiser/Volvo DP/Yamaha '01 and NewerPerimeter-lighted Black dial with bold White graphics, Black aluminum bezel, contoured White pointer and flat glass lens. 2"- Hole Size: 2.0625" (53mm)For Engine Types:Mercury / Mariner / Mercruiser / Volvo DP / Yamaha '01 and NewerSpecifications:. Anti-scratch glass lens. 12 VDC negative ground. Perimeter-lighted Black dial. Can be adapted for 24 VDC systems. Factory P/N GP9374*Sold as an Individual**Gauge Cover not Included