Chesapeake White SS 2" Trim Gauge (Mercury / Mariner / Mercruiser / Volvo DP / Yamaha - '01 and Newer)Perimeter-lighted White dial with stylish Blue and White graphics, polished stainless steel bezel, contoured White pointer and domed glass lens.2"- Hole Size: 2.0625" (53mm)For Engine Types:(Mercury / Mariner / Mercruiser / Volvo DP / Yamaha-2001 and newer)Specifications:. Anti-scratch glass lens. Plastic Cases for corrosion resistance and long life. 12 VDC negative ground. Can be adapted for 24 VDC systems. Factory P/N GP9649*Sold as an Individual**Gauge Cover not Included