CIPA USA Round 3.75" Adjustable Stick On Convex Hotspot Mirror. 75" convex adjustable HotSpot mirror. 360 degree adjustable spot mirror gives you customized wide angle viewing. Easily mounts to original factory mirror featuring convenient stick-on mounting. HotSpot mirrors may be placed anywhere you wish but are typically placed on the bottom outside corner of the original mirror. The desired placement varies from person to person. To find the placement that is right for you start by placing a piece of folded tape on the back of the HotSpot and sticking it onto your OE mirror where you think you might want it. Then sit in your car and look through the HotSpot. Keep adjusting the placement until it suits your needs. Finally remove the folded tape peel the adhesive backing tape off the HotSpot and apply it permanently. Expand your horizons. Features of CIPA USA 49304 Round 3.75" Adjustable Stick On Convex Hotspot Mirror Avoid tricky blind spots when passing or changing lanes Easily mounts to original factory mirror featuring convenient stick-on mounting HotSpot mirrors may be placed anywhere you wish but are typically placed on the bottom outside corner of the original mirror Diameter: 3.75" Package Contents: CIPA USA 49304 Round 3.75" Adjustable Stick On Convex Hotspot Mirror CIPA USA 49304: Round 3.75" Adjustable Stick On Convex Hotspot Mirror