Designed for PROs who demand superior performance, this LENOX® retractable knife goes above and beyond. It delivers Improved blade stability for precise cuts and control. 100% compatibility with 4-notch blades means twice as many retractable blade positions available. Convenience of quick blade change and blade storage that users have come to expect plus space to store up to 10 blades. Sold with 3 premium LENOX® bi-metal blades with titanium edge, proven to stay sharp.