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 made in USA and forged from high carbon U.S. steel that is specially coated for ultimate rust prevention.