Dual-sided magazine stores up to 10 standard blades in one knife, ready for instant use;Quick-release magazine switch lets you eject, flip, and reload the magazine to switch blade types in seconds;Slide button automatically reloads a fresh blade in a smooth, one-handed motion;Includes five standard utility blades and five hook blades for cutting versatile materials like roofing, carpet, drywall, and more;Smooth slide-action control extends and retracts blades easily for fast, precise, and compact cutting;Always wear approved eye protection.