Retractable Utility Knife DeWalt DWHTTR350-0 — retractable-blade heavy-duty utility knife

DeWalt DWHTTR350-0 is a retractable-blade heavy-duty utility knife engineered for general cutting tasks in construction, workshops and domestic projects. The tool combines a retractable blade mechanism for secure storage and precise cutting control with a robust body designed to withstand frequent use. Its ergonomic shape supports steady grip and safer operation when slicing cardboard, plastic sheeting, insulation and similar materials.

Advantages

The retractable blade reduces accidental exposure during transport and storage while allowing rapid blade extension when needed. A reinforced housing improves impact resistance and longevity under regular on-site conditions. The knife’s ergonomic profile helps reduce hand fatigue and provides consistent blade alignment for straight, accurate cuts. Blade change and maintenance are straightforward, enabling quick replacement without specialized tools.

Suitable for

• Cutting cardboard and packaging materials
• Trimming plastic sheeting and vinyl
• Scoring and cutting insulation and drywall paper
• General workshop and on-site cutting tasks

Key specifications

• Blade type: retractable utility blade compatible with standard heavy-duty blades
• Body material: impact-resistant composite housing
• Ergonomics: contoured grip for one-handed use
• Safety: blade retraction mechanism for secure storage
• Maintenance: tool-free blade change capability

How to use

Hold the knife with a firm, comfortable grip and slide the blade control to extend the blade to the required length for the task. Position the blade at the correct angle and apply steady, controlled pressure to guide the cut. Retract the blade fully after each use before setting the tool down or storing it. Replace the blade when it becomes dull by following the manufacturer’s blade-change procedure to ensure correct seating and safe operation.

Usage recommendations

Use appropriate personal protective equipment such as cut-resistant gloves and eye protection. Keep fingers clear of the blade path, work on a stable surface, and avoid forcing the blade through very dense materials; make multiple light passes for cleaner results and increased blade life.