Snap & Zap Custom Towing Mirror set for 2019 and newer GMC Sierra 1500 and Chevrolet Silverado 1500. Mirrors install easily with a clip-on design, no tools or additional hardware are required. Snap & Zap mirrors provide a no add-on look and blend in nicely to your vehicle design. The extension does not interfere with the OE Mirror Glass. Mirrors are designed to be folded without removing extensions. Includes both driver and passenger side mirror extensions, as well as a handy storage bag. Mirror glass adjusts manually. Flat Lens. Mirror glass does not have heating capabilities. Mirror has no turn signal. Housing finish is textured black. NOTE: There is a small adjustment screw in the bottom of the mirror housing that is supposed to be tightened once the mirror has been adjusted properly.