These reflective numbers adhere easily to asphalt and concrete without any special painting machines, tools or equipment. Reflective pavement markings are ideal as an alternative to paint stencils. These parking lot numbers are simple and quick to install. They are pre-cut with an anti-skid finish and are typically 15 times thicker than parking lot paints, making them much more durable than paints.  Numbers come in two sizes: 8" x 4" and 12" x 6". Letters are available in 12" x 6" only. Both letters and numbers come in yellow or white, with other colors and sizes available upon request. Surface primer is recommended on older asphalt or concrete. One gallon of primer covers 37 numbers or 166 12" numbers.