Poly Plasti-Flex Liquid Plastic Unit Size:38.5-lb kit if you want to cover

if you want to cover a 20 square foot area with one inch of glass

and fine grits

Available with large or small center hole (for screws or pins)

Ten pocket weights to control grinding pressure

Poly Plasti-Flex Liquid Plastic Unit Size:38.5-lb kit if you want to coverPoly Plasti Flex is a flexible polyurethane casting plastic that is most often used for making slightly flexible and impact resistant parts such as decorative trim, flex molding and millwork. Poly Plasti Flex also works well for casting props and display items requiring high impact resistance. This product can be machined, drilled, and sanded (contains no silica). WARNING: This product can expose you to chemicals including Phenylmercuric compound,