CHANNELLOCK® 480 BIGAZZ® Straight Jaw Tongue & Groove Pliers didn t get their name by accident. With a 5-1/2 inch jaw capacity these pliers are as big as the job at hand. Its 12 non-slip undercut adjustment channels offer a versatile range of adjustments for virtually every field application. CHANNELLOCK® Straight Jaw Tongue & Groove Pliers are built to last with a PERMALOCK® fastener to eliminate nut and bolt failure patented reinforcing edge to minimize stress breakage and laser-hardened teeth to provide a better longer lasting grip. CHANNELLOCK® Straight Jaw Tongue & Groove Pliers are A and forged from high carbon . steel that is specially coated for ultimate rust prevention.