If you’ve every tried to sand the style lines in bodywork with a folded up piece of sand paper you know how easy it is to loose the sharpness of the details. These closed cell foam blocks are molded in 6 different hardnesses, in a wide range of profiles, to fit most detail sanding needs. 11 inches in length and works with 2.75″ wide adhesive backed sand paper. Tapered round edges prevent gouging. Pliable and durable. Free how-to DVD included. Made in USA.