The Rothenberger 70532 RoLock Quick Adjusting Plier, 10-inch, are professional-grade water pump pliers with jaw locking system. Provide a secure grip on round, square or hex-shaped items with the push of a button. Multi-purpose jaws grip round, flat, square or hex items. 14 groove opening positions: Opening capacity of 2-1/3-inch. Patented enclosed, adjusting lock system provides fast selection of the opening size with the touch of a button. Non-slip, rubber handle grips: Secure, anti-slip. Durable, double-hardened, chrome vanadium steel with black oxide finish: Resists corrosion. Established in 1949, Rothenberger has over 50 years of history as the market leader of innovative and technologically sophisticated pipe tools and machines. A long list of patents, Certification in ISO 9000, 9001 and 9002 and an emphasis in research and development result in continuous improvement and new developments in professional pipe tool technology.