Typhoon 10 self-rotating nozzles from NLB Corp. are engineered to clear blocked tubes and pipes with high-pressure water. Users can choose heads designed for cutting through blockages or for polishing tube walls, or universal heads that do both. The nozzles can be ordered in a variety of drill patterns and are coated with titanium nitride for long life. The RPN1510 operates at 15,000 psi and the RPN2410 at up to 24,000 psi to clean tubes with a 5/8-inch or larger I.D. Both have a maximum flow of 10 gpm and rotate at 7,000 rpm. The RPN1520 (15,000 psi) and RPN2020 (20,000 psi) operate at flows up to 20 gpm. The RPN4009 (40,000 psi) operates at flows up to 9 gpm. There are also three models for tubes with an I.D. of 3/4 inch or more. 248/624-5555; www.nlbcorp.com.