Hopkins Towing Solutions Red Rectangular Stick on Reflectors B178SRW self-adhesive stick-on reflectors are easy to install and ideal for any safety application. The reflectors can be used on trailers and trucks school buses agricultural equipment posts fences metal or wood stakes and more. The reflectors allow for easy installation with their permanent mount adhesive backs and stay in place in adverse weather conditions. Durable acrylic lenses with reflex for better visibility. Each reflector measures 3-1/8 W x 1-3/8 H.