
I have glued these directly to my car mirrors without the plastic adapter piece. They're a great size so you can really take a look and see what you need to see. My previous ones were good but too small and not that efficient in terms of checking, I like this one.

Topteng Car Mirror Covers Caps, 2Pcs Union Jack UK Flag Mirror Covers Fits For MINI Cooper R55 R56 Clubman Hatchback Convertible 2008-2013 (Auto Powerfolding Only)
10 Review

Mount Arm Media LCD-T22 black
24 Review

Adjustable Square Mirrors For Blind Spot By Zone Tech - 2-Pack Premium Quality Stick-On Side Mirrors For Cars, Trucks, Motorcycles And Snowmobiles
25 Review

DVR Slimtec Dual M9, 2 cameras, black
50 Review