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Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter
Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter
Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter
Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter
Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter
Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter

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Heavy-Duty Utility Knife Set, SK5 Steel Retractable Box Cutter

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The YONK Heavy-Duty Utility Knife Set features professional retractable box cutters with high-hardness SK5 steel snap-off blades. Equipped with multiple locking mechanisms (push-lock/auto-lock/knob-lock) and ergonomic non-slip handles, these cutters deliver sharp, durable cutting performance, ideal for construction, DIY, office use and daily cutting tasks.
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Product Overview

The YONK Heavy-Duty Utility Knife Set is an essential cutting tool for professionals, DIY enthusiasts and daily use, designed for reliable, sharp cutting in a wide range of applications.


Key Features


Premium SK5 Steel Blades

Each utility knife is fitted with high-quality SK5 carbon steel blades, which are ultra-sharp, wear-resistant and durable. The snap-off design allows you to break off dull segments to expose a fresh, sharp edge, extending the service life of the knife and eliminating the need for frequent blade replacement.



Multiple Locking Mechanisms

This set includes 3 common locking structures to meet different usage needs:
  • Push-Lock: Simple and fast, suitable for quick, frequent cutting tasks

  • Auto-Lock: Automatically locks the blade in place, safe and convenient

  • Knob-Lock: Secure, high-torque locking, ideal for heavy-duty construction cutting



Color-Coded for Quick Identification

To enhance usability and efficiency, each wrench is coated with a distinct, vibrant color (Rainbow Color-Coding). This visual coding allows users to identify the correct size instantly, eliminating the need to measure or read small markings, saving valuable time during repairs and assembly.



Ergonomic & Durable Design

The knives feature ergonomic, non-slip handles made of high-impact ABS plastic, providing a comfortable, secure grip and reducing fatigue during extended use. The retractable blade design allows for easy adjustment of blade length, and the compact size makes it easy to carry in a toolbox, pocket or bag.


Wide Application

Perfect for construction, renovation, wallpaper cutting, box opening, office paper cutting, DIY crafts and daily household cutting tasks. Whether you are a professional contractor, office worker or DIY hobbyist, the YONK Utility Knife Set delivers reliable performance and long-lasting durability.


Parameter

Specification

Material

SK5 High Carbon Steel

Blade

Snap-Off Blade

Craft

Precision Ground & Heat-Treated

Handle

Ergonomic Non-Slip Handle

Function

Retractable Locking Mechanism

Application Scenarios

  • Box Opening & Packaging Cutting

  • Wallpaper & Wall Covering Installation

  • DIY Crafts & Model Making

  • Office Stationery & Paper Cutting

  • Construction Material & Plastic Cutting

  • Express Logistics & Warehouse Packing

Kingfaith is a professional manufacturer specializing in industrial construction tools and pipe processing equipment. Our product range includes cordless pipe threading machines, rebar threading tools, and other portable equipment designed for construction and pipeline installation projects.

Our products are widely used by construction contractors, engineering companies, and pipeline installation teams for municipal projects, building construction, and industrial pipeline systems.

With a focus on product reliability, practical design, and stable manufacturing quality, we are committed to providing efficient tools that improve productivity on construction sites.
Our Work Statistics
Our tools are widely used in construction projects, pipeline installation, and industrial maintenance worldwide.
  • 10+
    Years Industry Experience
  • 5000+
    Customers Served
  • 50+
    Export Markets
  • 1000+
    Construction Projects Supported
Why Choose Us?

1. Professional Grade & Premium Quality
Made of high-quality SK5 high carbon steel, our utility knives deliver exceptional sharpness and wear resistance. The heat-treated blades stay sharp longer, perfect for professional cutting and heavy-duty tasks.
2. Safe & Secure Locking Mechanism
Features a reliable retractable locking system to keep the blade firmly in place. Prevents accidental retraction and ensures safe, controlled cutting in all applications.
3. Ergonomic & Comfortable Grip
Textured TPR rubber handle provides a non-slip, comfortable hold, reducing hand fatigue during long hours of use. The contoured design ensures maximum control and leverage.
4. Multi-Size Set for Versatile Use
Includes 9mm, 18mm and 25mm utility knives to cover all your cutting needs. From precision crafts to heavy-duty construction, this set has you covered.
FAQs
  • Is it a single-blade utility knife?
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    Yes, it is a professional single-blade cutter with a fixed and stable blade, no shaking during use.
  • What material is the knife body made of?
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    The knife body is made of high-strength zinc alloy, which is sturdy, durable and drop-resistant.
  • Is the blade sharp and durable?
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    The blade is made of high-carbon steel, very sharp and wear-resistant, suitable for heavy-duty cutting.
  • Can the blade be replaced?
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    Yes, the blade is replaceable, easy to install and compatible with standard replacement blades.
  • Is it suitable for construction and unpacking?
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    Yes, it is ideal for wallpaper cutting, carton unpacking, leather cutting and construction work.
  • Does the blade lock securely?
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    The blade locks tightly, no slipping or retracting automatically, ensuring safe operation.
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  • Repair and maintenance
    Provide global after-sales service, including repairs, maintenance, and replacement of parts.​​​​​​​
  • After sales team
    Having a professional after-sales service team and a comprehensive service network, we can provide timely.​​​​​​​
  • Technical Support​​​​​​​
    Provide online technical support and frequently asked questions, making it convenient for customers to quickly solve problems.​​​​​​​

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