Faster Cutting, Safer To Use And Longer Lasting! Achieve precise results whether you make log furniture as a hobby or a profession. The dual precision-ground blades cut twice as fast, retain their sharpness longer, never rust or clog, and generate less heat for long-lasting service – a significant improvement over single blade cutters. Features: • Tenon cutters features a self-centering design which produces perfectly shaped tenons• The "In-Sight" measurement system has slots and radial grooves set at 1/2" interval• Dual blades cut twice as fast as ordinary tenon cutters• Generate less heat for long lasting service• Blades are made of hardened steel and the 1/2" steel shank is threaded for easy replacement