These are 4" TOW AWAY ZONE stencil . Let me know if you have questions. Parking Lot Stencils. Brand New. Never Used. We manufacture every day, all day. This is 1/16" thick Low Density Polyethylene Plastic; LDPE. It's the material all Pavement Marking Companies choose. All of my own, personal stencils are 1/8" thick material...but, for occasional use...this 1/16" thickness will serve you well. I am Dan Zurcher and I own The American Striping Company.