Mechanic Hand Tools & Torque Wrenches

What does the term 'Channellock' tongue-and-groove pliers refer to technically?

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 Correct IncorrectInterlocking undercut tongue-and-groove channels that eliminate slip and allow adjustable jaw capacity without putting shearing force on the center pivot bolt.

What does the term 'Channellock' tongue-and-groove pliers refer to technically?

• Undercut interlocking tongue-and-groove adjustment ribs that prevent jaw slippage under load
• A clamp used only on TV satellite cables
• A tool with built-in radio channels
• Pliers with soft foam gripping pads