Mijia Snap-off Utility Knife | Retractable Box Cutter with Auto Lock

This Mijia snap-off utility knife delivers precise cutting with a secure auto-lock mechanism. It is built for everyday cutting tasks around the office, warehouse, or home workshop.

The knife features a durable metal body with a comfortable rubber grip handle. It uses standard 9mm and 18mm high carbon steel blades that snap off easily for a fresh, sharp edge every time. The automatic lock engages as you extend the blade, keeping it firmly in place during use.

This tool is designed for efficiency and safety. The retractable blade retracts smoothly when not in use, reducing the risk of accidental cuts. Its lightweight and compact design makes it easy to store in a drawer or carry in a pocket or tool belt.

Whether you need to open packages, cut cardboard, or trim materials, this utility knife provides reliable performance and a comfortable, secure grip.

Key Features and Benefits

- Auto-lock mechanism that secures the blade during cutting for added safety and control

• Snap-off high carbon steel blade that provides a consistently sharp edge without needing a sharpener

• Ergonomic rubber handle that reduces hand fatigue during extended use

• Retractable design that allows the blade to be safely stored when not in use

• Durable metal body that withstands daily wear and tear in demanding environments

Who Is This For

- Office workers who need a reliable tool for opening packages and cutting paper

• Warehouse staff who cut tape, cardboard, and strapping regularly

• DIY enthusiasts and hobbyists working with cardboard, foam board, or thin materials

• Retail or e-commerce employees who process shipments and returns

Usage Scenario

Maria works in a busy shipping department. Every morning, she opens dozens of boxes and cuts through layers of tape and corrugated cardboard. Before using this knife, her hand would get sore by midday. Now, the comfortable rubber grip and secure auto-lock let her work faster and with less strain. She no longer worries about the blade slipping or accidentally cutting herself because the retractable function keeps the blade safely stored when she sets it down.

Micro Comparison

Unlike basic fixed-blade cutters that require a separate tool to change blades, this snap-off knife lets you break off the dull tip for a fresh edge instantly. Its auto-lock provides more stability than many spring-loaded or friction-lock models, giving you consistent control during precise cuts.

Specifications

Blade Material: Stainless Steel

Handle Material: Rubber

Body Material: Metal

Blade Length: 4 cm / 1.6 in

Full Length: 4 cm / 1.6 in

Blade Width: 9 mm and 18 mm compatible

Lock Type: Auto Lock

Blade Angle: ≤60°

Type: Combination (snap-off)

Package Includes

- 1 x Mijia Snap-off Utility Knife

• 1 x Spare Blade (pre-installed)

Why You Will Love It

You will appreciate the peace of mind that comes from a knife that locks securely and retracts smoothly. The snap-off blade means you never have to stop working to find a sharpener. Its comfortable grip makes even long cutting sessions feel effortless.

Questions and Answers

Question: Is this knife safe to carry in my pocket?

Answer: Yes, the blade retracts fully into the handle and locks in place, making it safe to carry in a pocket or tool pouch.

Question: Can I use 18mm blades in this knife?

Answer: Yes, this knife is compatible with both 9mm and 18mm snap-off blades.

Question: How do I change the blade?

Answer: Simply retract the blade completely, then press the release button on the handle to slide the blade holder open. Insert a new blade and snap off the used tip if needed.

Question: Is the handle slip-resistant?

Answer: Yes, the rubber handle provides a non-slip grip even when your hands are slightly sweaty or dusty.

Question: What materials can this knife cut?

Answer: It cuts cardboard, paper, plastic, tape, rope, leather, foam board, fabric, and thin sheet materials like balsa wood.

Question: Does the knife come with spare blades?

Answer: Yes, one spare blade is pre-installed in the handle, so you have a fresh blade ready when needed.