Bi-Metal Utility Knife Blades from Irwin

The new Blue Blade bi-metal utility knife blades and knives from Irwin Industrial Tool Co. are unbreakable under ordinary conditions, and stay sharp three times longer than conventional carbon steel blades. Pro-Touch retractable knife designs incorporate quick-change technology. The press of a button releases the blade for removal, and tool-free access to inside knife storage is another convenience.