Cuts up to 4/0 aluminum and 2/0 soft copper. Heavy-duty design, precision made of fine polished high carbon drop forged steel. Grips have a Santoprene core with TPR-rubber overmold which composites for durability, comfort, and secure grip. New Code Blue designation on handles makes it easier than ever to choose the right tool for the job Channellock uses high carbon C1080 steel for superior performance on the job, and an electronic coating for ultimate rust prevention. This has a unique design, heavy-duty and carefully balanced with broader handles for better leverage and extra comfort. Also the closely matted cutters are scientifically heat treated to hold their edge. All in one durability and comfort! It's an all in one tool that is easy to store.