Channellock GS-3SA Tongue and Groove Plier set:426,420,440 and 61A (3 Piece) Replaces Channellock's GS-3S CHANNELLOCK uses high-carbon steel for superior performance on the job and specially coated for ultimate rust prevention Right angle, laser heat-treated teeth grip better and last longer Undercut tongue and groove design won't slip Patented reinforcing edge minimizes stress breakage