Introduction
This manual provides essential information for the safe and effective use of your MTP 10 Pcs Handi Cut 3-7/8\" Replacement Blades. These blades are designed for compatibility with 3-7/8\" steel frame Handi-Cut models 37301, 37201, 37251, as well as Craftsman, Ronan, and other Handi-cut tools requiring 3-7/8\" blades. Made from high-grade Japan steel, these OEM quality blades are engineered for precision cutting of materials such as rope and leather.

Image: A set of ten MTP 3-7/8 inch replacement blades. These blades are made of high-grade Japan steel and are designed for various cutting tasks.
Safety Information
Always prioritize safety when handling sharp objects. Failure to follow these instructions may result in injury.
- Handle with Care: Blades are extremely sharp. Always handle them by the dull edges or protective casing.
- Keep Away from Children: Store blades in their reusable plastic storage tube and out of reach of children and pets.
- Wear Protective Gear: Consider wearing cut-resistant gloves and eye protection when installing or using blades.
- Proper Disposal: Dispose of dull or damaged blades safely in a puncture-resistant container.
- Inspect Before Use: Before each use, inspect the blade for any damage or defects. Do not use damaged blades.
Setup: Blade Installation
These replacement blades are specifically designed for 3-7/8\" Handi-Cut tools. Ensure your tool is compatible before attempting installation.

Image: A visual guide illustrating the correct tool size for these replacement blades. The 3-7/8 inch tool is compatible, while the 2-1/2 inch tool is not.
- Identify Compatible Tool: Confirm your Handi-Cut tool requires 3-7/8\" replacement blades. Refer to your tool's manual or markings for size verification.
- Remove Old Blade: Carefully open your Handi-Cut tool. Locate the mechanism holding the old blade. Depending on your tool model, this may involve unscrewing a fastener or releasing a latch. Exercise extreme caution as the old blade may still be sharp.
- Insert New Blade: Take one new MTP replacement blade from its storage tube. Align the new blade with the slot or mounting points in your Handi-Cut tool. Ensure the blade is seated firmly and correctly.
- Secure Blade: Fasten the blade securely using the tool's original mechanism (e.g., tighten screws, close latch). The blade should not wobble or move freely.
- Test Functionality: Gently close and open the Handi-Cut tool to ensure the blade operates smoothly and is properly aligned.
Operating Guidelines
These blades are designed for cutting various materials. Always use the tool as intended by its manufacturer.
- Material Compatibility: Suitable for cutting materials such as rope, leather, and similar pliable items. Avoid using on excessively hard materials like metal or thick wood, which can damage the blade.
- Clean Cuts: Ensure the material is positioned correctly within the tool's jaws for a clean, efficient cut.
- Apply Even Pressure: Apply steady, even pressure when closing the tool to make a cut. Avoid excessive force, which can lead to blade damage or an uneven cut.
- Blade Storage: When not in use, store the blades in the provided plastic reusable storage tube to protect them and prevent accidental injury.
Maintenance
Proper maintenance extends the life and performance of your blades.
- Cleaning: After each use, wipe the blade clean with a dry cloth to remove any debris or residue. For stubborn residue, a slightly damp cloth followed by immediate drying is recommended.
- Drying: Ensure blades are completely dry before storing to prevent rust.
- Storage: Store unused and used blades in the provided plastic reusable storage tube in a dry environment.
- Inspection: Periodically inspect blades for signs of wear, dullness, or damage. Replace dull or damaged blades promptly to maintain cutting efficiency and safety.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Blade not cutting effectively. | Blade is dull or damaged. Incorrect material for blade. | Replace with a new blade. Ensure the material being cut is appropriate for the blade type. |
| Blade difficult to install. | Incorrect blade size. Obstruction in tool. | Verify your tool requires 3-7/8\" blades. Check for any debris preventing proper seating of the blade. |
| Blade wobbles after installation. | Blade not secured properly. Incorrect blade size. | Ensure all fasteners are tightened. Re-check blade compatibility with your tool. |
Specifications
| Brand | MTP |
| Model Number | MTP378 |
| Blade Size | 3-7/8 inches (11/20\" x 3-7/8\") |
| Material | High Grade Japan Steel (Blade), Plastic (Handle Material - for compatible tools) |
| Color | Silver |
| Unit Count | 10 Count |
| Compatibility | 3-7/8\" Handi-Cut models 37301, 37201, 37251, Craftsman, Ronan, and other compatible Handi-cut tools. |
| Storage | Plastic reusable storage tube |
Warranty and Support
For specific warranty information regarding MTP products, please refer to the documentation provided with your original purchase or contact MTP customer support directly. For assistance with product inquiries or technical support, please visit the official MTP website or contact their customer service department.
Always ensure you are using genuine MTP replacement parts to maintain product performance and validity of any applicable warranties.





