Stanley 10-143P Snap-off Utility Knife 18mm

Product Description

The STANLEY 10-143P is an 18mm snap-off utility knife designed for clean, repeatable cuts across a wide range of trade and maintenance tasks. The snap-off blade system allows the user to advance a fresh cutting edge quickly without swapping the entire blade, keeping work moving on the job site. Weighing approximately 0.1 pounds, the knife is lightweight enough for extended use without hand fatigue. It is a standard hand tool appropriate for electricians, HVAC technicians, plumbers, and general maintenance professionals who need reliable cutting performance in a compact form factor.

This knife is suited for residential and commercial service work where utility cutting is part of routine tasks — trimming insulation, scoring materials, opening packaging, or cutting wire sheathing. The 18mm blade width provides a wider cutting surface than standard 9mm snap-off knives, making it a preferred choice when working with thicker or denser materials. It is sold as a single unit and is appropriate for individual tool kits or service van inventories.

Key Features

• 18mm snap-off blade format for extended blade life and quick edge advancement
• Wider 18mm blade width handles thicker materials compared to standard 9mm snap-off knives
• Lightweight construction at approximately 0.1 pounds for reduced hand fatigue
• Compact utility knife profile suitable for tool belts and service kits
• Sold individually for easy single-unit replacement or stocking

Compatibility

Designed as a standard 18mm snap-off utility knife compatible with 18mm snap-off replacement blades commonly available from STANLEY and other compatible blade manufacturers.

Installation Notes

No installation is required for this hand tool. Always retract or snap off the blade before storing the knife or placing it in a tool bag to prevent accidental cuts. When snapping off a worn blade segment, use the blade snapper built into the knife or a dedicated snap-off tool rather than using pliers or an unguarded surface. Dispose of spent blade segments in a puncture-resistant sharps container in accordance with applicable job site safety practices.

Technical Specifications

• Blade Width: 18mm
• Weight: 0.1 pounds
• UPC: 76174101430
• Unit of Measure: Each

Standard Information

• Brand: STANLEY
• Manufacturer Part Number: 10-143P