The Channellock 420 is a 9.5-inch tongue and groove plier with a 1.5-inch jaw capacity, straight-jaw profile, and the Channellock-signature blue-dipped handles. The undercut tongue-and-groove design locks the jaws at each adjustment so they won’t slip under load, and the Permalock fastener replaces the nut-and-bolt joint that eventually fails on lesser pliers.
The 420 is the mid-size Channellock — smaller than the 440 (12-inch) most plumbers reach for first, larger than the 426 (6.5-inch) for tight utility work. 9.5 inches and 1.5 inches of jaw opening covers almost every household plumbing nut, sink strainer, compression fitting, and small-trap job, which makes it the everyday pick when a bigger plier is overkill. The undercut groove design resists jaw slippage — the single most frustrating failure on cheap adjustable pliers. The Permalock joint eliminates the nut-and-bolt construction found on bargain pliers; nothing to back out, nothing to develop slop.
A daily-carry tongue and groove for plumbers, maintenance techs, and homeowners who want one plier that handles the bulk of household fitting work.
Channellock has forged tongue and groove pliers in Meadville, Pennsylvania since 1886. Country of manufacture: United States — per the Amazon listing.
