Product details:

National Cycle Hand Deflectors - Coupled with a windshield, Hand Deflectors give additional protection from the wind and rain. Hand Deflectors easily install to the control boss of your mirrors, and removal is just as easy. Allows plenty of room for lever movement and for riders with large gloves. Steel and High-Impact Acrylic, color-matched to SwitchBlade, Heavy Duty and Dakota windshields. Mirror mount hardware included.