Ultra Rugged, Industrial, Retractable, Snap Off Blade Box Cutter. An ultra rugged steel cutting tool with a protective and comfortable thick, plastic jacket. Constructed for the toughest, heavy duty cutting applications, the Model - T is perfect for all warehouse, industrial, and construction jobs. No tools are required for blade changes and utilizing an 8 point snap off blade, a new cutting edge is only a snap away. Uses Tach-It Style B-8 Blade.