Utility knife STANLEY STHT10489-1 with 18 mm snap-off blade, 155 mm length, yellow

STANLEY STHT10489-1 is a compact utility knife with an 18 mm snap-off blade and a total length of 155 mm. The tool has a segmented blade that allows rapid removal of worn sections to restore a sharp edge, and a slim 20 mm profile for precision cutting. Its yellow handle improves visibility on busy workbenches or job sites and the design is intended for general workshop tasks, packaging, drywall trimming and carpet or flooring work where controlled, accurate cuts are required.

Advantages

The knife’s 18 mm snap-off blade offers multiple usable segments, reducing downtime for blade changes and ensuring consistently sharp performance. The 155 mm overall length and narrow 20 mm thickness provide a comfortable grip and accurate guidance when making fine cuts. The high-visibility yellow handle helps locate the tool quickly, while the compact construction makes it suitable for one-handed use and storage in a tool pouch or pocket.

Suitable for

• Opening and cutting packaging materials such as cardboard and plastic film
• Trimming drywall or plasterboard edges
• Cutting carpet or underlay during installation or repair
• General workshop tasks including trimming, scoring and precision cutting

Key specifications

• Blade type: 18 mm segmented (snap-off) blade
• Total length: 155 mm
• Profile thickness: approximately 20 mm
• Handle color: yellow for high visibility
• Designed for one-handed operation and precision cuts

How to use

Hold the knife with a firm grip and align the blade with the cutting line. Apply steady, controlled pressure and make multiple passes on thicker materials rather than forcing a single deep cut. When the front blade segment becomes dull, snap it off along the scored groove to expose a new sharp edge; use pliers or the knife’s built-in breaking tool if available, following safety precautions. Store the knife with the blade retracted when not in use and replace the blade cassette or blade segments according to wear and manufacturer guidance.

Usage recommendations

Use appropriate personal protective equipment such as cut-resistant gloves and eye protection when cutting. For heavy-duty or repetitive tasks, consider using full-size knives or specialist blades; for general-purpose work, the compact 155 mm utility knife provides a balance of control and convenience.