The Penetrator Hex Nozzle from Arthur Products is designed to use its thrusting rear jets in unison with a single blasting forward jet to drive into and blast out tough blockages like grease, sand and debris. It is available in female 1/8-, 1/4-, 3/8-, 1/2-, 3/4- and 1-inch NPT sizes, with a maximum allowable working pressure of 10,000 psi. The standard drill pattern is one forward and three rear-thrusting jets drilled to the machine’s gpm and psi. Different patterns are available. 800/322-0510; www.arthurproducts.com.