The Stanley FatMax InstantChange Retractable Utility Knife, part number 0-10-788, features a quick-change blade mechanism for efficient blade replacement without tools. Designed for durability, it includes an integrated blade storage compartment within the handle, capable of holding up to 5 spare blades. The knife is equipped with an interlocking nose for enhanced safety during cutting tasks, preventing blade separation. Its ergonomic design ensures comfortable use and a secure grip, making it suitable for various cutting applications in construction, industrial, and general utility settings. This genuine Stanley tool is built for reliability and ease of use.