The Jonard Tools RC-600 Ratcheting Cable Cutter is designed to cleanly cut copper (up to 600 MCM), aluminum (up to 750 MCM), and multi-conductor cable. This cable cutter features the following: Made of heat-treated carbon steel with induction-hardened cutting edges for maximum strength and durability Unique design allows you to hold and cut cables quickly and easily Spring-loaded mechanism on handles for automatic opening Ergonomically designed handle with cushioned rubber grip for greater comfort and torque This cable cutter is not designed for use on ACSR or other steel cables