"The K Tool International 10 Piece Locking Pliers Set is the perfect package to help you get a grip on any Tightening, Loosening, Clamping, or Wire Cutting challenge you face. Perfect for any at home user, repair shop or collision center. With Heat Treated and Nickle Plated Steel composition, these Vise-Grip Pliers can handle as much Torque as you can give them. We utilized an Improved, Curved Jaw Design for maximum gripping power and performance as well as a Trigger Release Function to stay locked on tight. For the two Straight Jaw Designs, we opted Carbon Steel lower Jaw for optimal strength and durability.