PRODUCT80 BEST Aluminum Real Estate Rider Signs | Double Sided and Durable | (Set of 3: FOR SALE) BOOST YOUR REAL ESTATE BUSINESS! Use Rider signs to catch the eye of potential buyers. An easy and fantastic way to customize your real estate sign DOUBLE SIDED Aluminum Signs That Measure 6" x 24" Holes for mounting are not pre-drilled which allows these riders to fit most existing real estate signs Sign is made of .040 aluminum, which is the standard in the real estate business