Channellocks - a term used for almost all generic slip joint pliers, but a term that is registered as a trademark by Channellock, Inc., my employer for the last 31 years. incidentally, the blue color on Chabnnellock tools is also a registered trademark, and has been proven in court, refering to a certain shade of blue in the color spectrum, and extending to several shades on either side of it. Incidentally, when I started at Channellock in 1980, just about all hand tools sold by Sears (Craftsman) were manufactured by Channellock, until the business went to China....There is NO 'Sears' factory, they have ALL their products 'farmed out' so to speak.