---
product_id: 47044756
title: "STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789)"
brand: "stanley"
price: "€ 31.27"
currency: EUR
in_stock: true
category: "Stanley"
url: https://www.desertcart.sk/products/47044756-stanley-pro-twin-blade-retractable-utility-knife-box-opener-10
store_origin: SK
region: Slovakia
---

# 2 blades in 1 knife patented interlock blade lock onboard storage for 9 blades STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789)

**Brand:** stanley
**Price:** € 31.27
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut twice, carry once — the ultimate utility knife for pros on the go!

## Quick Answers

- **What is this?** STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789) by stanley
- **How much does it cost?** € 31.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/47044756-stanley-pro-twin-blade-retractable-utility-knife-box-opener-10)

## Best For

- stanley enthusiasts

## Why This Product

- Trusted stanley brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First, Always:** Patented interlock system ensures only one blade extends at a time for maximum safety.
- • **Blade Changes in Seconds:** Instant blade change button means no downtime—keep your workflow seamless.
- • **Double the Cutting Power:** Twin blade design lets you switch blades instantly without carrying extra tools.
- • **All Your Blades, One Handle:** Onboard storage holds up to 9 spare blades so you’re always ready to tackle the next cut.
- • **Built to Last, Built for Comfort:** Durable cast metal core with soft grip panels reduces fatigue during long projects.

## Overview

The STANLEY FATMAX Twin Blade Knife combines two utility knives in one with a patented interlocking blade system for enhanced safety and efficiency. Featuring instant blade changes, onboard storage for up to 9 blades, and a durable metal core with ergonomic soft grip, this tool is designed for professionals who demand reliability and speed on the job. Backed by a limited lifetime warranty and boasting a 4.6-star rating, it’s the smart choice for multitasking and precision cutting.

## Description

Built for the pace of residential construction, the STANLEY PRO Twin-blade Retractable Utility Knife 10-789 helps keep work moving from rough-in to punch-out. The twin-blade design gives you the advantage of having two blades ready in one tool, helping reduce interruptions when the task changes and time matters. Whether you’re opening bundles, trimming housewrap, scoring drywall, cutting roofing felt, or breaking down cardboard and plastic packaging, this knife is made to support a steady workflow on busy jobsites. The retractable format helps make it easy to carry, store, and keep close at hand between cuts, while the durable, professional-style build is designed for repeated daily use. Compact, practical, and jobsite ready, it delivers the straightforward performance residential construction pros need to stay efficient through a wide range of everyday cutting tasks.

## Features

- Twin-Blade Design — Keeps two blades ready in one tool to help reduce task-switching delays and keep your workflow moving.
- Quick Blade Replacement — Swap out worn blades fast and get back to the cut.
- Back-up Blade Ready - Easy access blade storage holds up to 9 blades for fast blade change
- One-blade-at-a-time operation — Interlocking sliders help prevent both blades from being extended simultaneously.
- Comfort-Grip Handle — Designed to help minimize fatigue and slippage for control on the job

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00V7FZQZG |
| Best Sellers Rank | #43,574 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #210 in Utility Knives |
| Blade Material | Stainless Steel |
| Brand | STANLEY |
| Brand Name | STANLEY |
| Color | Silver |
| Customer Reviews | 4.6 out of 5 stars 345 Reviews |
| Global Trade Identification Number | 00076174107890 |
| Handle Material | Metal/TPR |
| Handle Type | Manual-Retractable |
| Included Components | Stanley - 10-789 |
| Item Highlight | Twin blade box cutter, instant blade change, 9-blade storage, rubber comfort grip utility knife |
| Item Length | 9.5 inches |
| Item Type Name | Stanley - 10-789 |
| Item Weight | 0.09 kg |
| Manufacturer | STANLEY |
| Manufacturer Part Number | 10-789 |
| Manufacturer Warranty Description | Limited Lifetime Warranty |
| Material | Blend |
| Material Type | Blend |
| Model Number | Stanley - 10-789 |
| Number of Packs | 1 |
| Product Style | Classic |
| UPC | 076174107890 |
| Unit Count | 1 Count |

## Product Details

- **Blade Material:** Stainless Steel
- **Brand:** STANLEY
- **Color:** Silver
- **Handle Material:** Metal/TPR
- **Item Length:** 9.5 Inches
- **Item Weight:** 0.09 Kilograms
- **Manufacturer:** STANLEY
- **Material:** Blend
- **Style:** Classic
- **Unit Count:** 1.0 Count

## Images

![STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789) - Image 1](https://m.media-amazon.com/images/I/61uql+wjfPL.jpg)
![STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789) - Image 2](https://m.media-amazon.com/images/I/81VutN7EAGL.jpg)
![STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789) - Image 3](https://m.media-amazon.com/images/I/81iFbSnNIWL.jpg)
![STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789) - Image 4](https://m.media-amazon.com/images/I/815u54Ax87L.jpg)
![STANLEY PRO Twin-blade Retractable Utility Knife, Box Opener (10-789) - Image 5](https://m.media-amazon.com/images/I/81qRCLkJ0IL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.sk/products/47044756-stanley-pro-twin-blade-retractable-utility-knife-box-opener-10](https://www.desertcart.sk/products/47044756-stanley-pro-twin-blade-retractable-utility-knife-box-opener-10)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-11-14*