Custom-Fit Towing Mirrors by CIPA slide over your vehicle's existing mirror to give you enhanced vision and safety while towing. These mirrors are designed to fit your specific truck application. Constructed of a strong and durable automotive-grade ABS plastic that will last the life of your truck and won't rust. Aerodynamic design negates whistling noise while the tightening knob eliminates vibration. The glass in the CIPA Custom Towing Mirrors is adjustable so you can see all the way back to the rear of the load you're hauling. Ideal for 5th wheelers, trailers, boats and more! Takes seconds to install with no tools or drilling they just slide over your trucks stock mirrors. Sold in pairs or individually and comes with a 1-year warranty.