Scotchcast Plus Casting Tape is a lightweight, strong and durable casting tape that combines the benefits of a fiberglass casting tape with the handling ease of plaster. This knitted fiberglass fabric is impregnated with polyurethane resin and contains a lubricating agent which makes it feel slippery when exposed to water. Water initiates a chemical reaction which causes the tape to become stiff and rigid. Size: 4 Inch x 4 Yard. Color: White. Single Roll.