CIPA USA Suction Cup Rearview Mirror. It requires no tools to install no holes to drill and it wont scratch your boat. Once mounted the flexible arm lets you fine-tune the mirrors placement. The mirror head measures at 4 x 8 inches and contains convex safety glass for wide angle viewing. When it comes to boating being safe is just as important as having fun. Features of CIPA USA 11050 Suction Cup Rearview Mirror Suction cup mount Mirror Surface Dimension: 4 x 8 inches Convex glass for a wider viewing angle; Fully adjustable Universal mount Provides added safety Package Contents: CIPA USA 11050 Suction Cup Rearview Mirror CIPA USA 11050: Suction Cup Rearview Mirror