The RSST from Peter Mangone is a Reddi-Strip Foamboard PEX Stapler. Foamboard PEX Staplers are used in radiant heating applications for mounting pipes to foam. They make installing PEX tubing to foam an effortless and efficient process. Use only with Peter Mangone Reddi-Strip staples. The stapler can handle PEX tubing of 3/8”, 1/2”, 3/4” and 1” sizes.