This Stanley 10-079 is a classic, professional-grade retractable utility knife, often referred to as the "Interlock" model due to its unique blade-locking mechanism.

• Interlock Mechanism: The distinguishing feature of this knife is that the handle halves are designed to interlock at the nose, which prevents the handle from spreading when you are putting heavy pressure on the blade. This provides significantly more stability during tough cuts compared to standard retractable knives.

• Safety & Reliability: The heavy-duty metal body is built to withstand high-impact drops and daily wear. It features a retractable blade for safe storage and a multi-position slide button that allows you to lock the blade at varying depths, giving you control for scoring or through-cutting.

• Design Utility: It is the standard-bearer for general-purpose utility knives. Its size (5-3/8") is optimized for a comfortable grip, and it is fully compatible with the standard 11-911 blades you just cataloged.