Milwaukee Electric - M18TRADE BRUSHLESS 4-1/2 / 5 vs PRODIAMANT Fast Mortar Joint Cleaning –
Updated July 2026 — Milwaukee Electric - M18TRADE BRUSHLESS 4-1/2 / 5 wins on power and versatility, PRODIAMANT Fast Mortar Joint Cleaning – wins on price and specialization.
The Milwaukee grinder is a powerful, multifunctional tool, while the PRODIAMANT cutter excels in specialized mortar cleaning at a lower price.
Why Milwaukee Electric - M18TRADE BRUSHLESS 4-1/2 / 5 is better
Power
Delivers 11,000 RPM for efficient cutting
Versatility
Can handle various cutting tasks
Durability
Designed for heavy-duty use with overload protection
Why PRODIAMANT Fast Mortar Joint Cleaning – is better
Price
Significantly cheaper at $32.70
Specialization
Focused on efficient mortar removal
Compatibility
Fits most angle grinders with 5/8”-11 shank
Overall score
Specifications
| Spec | Milwaukee Electric - M18TRADE BRUSHLESS 4-1/2 / 5 | PRODIAMANT Fast Mortar Joint Cleaning – |
|---|---|---|
| RPM | 11,000 | N/A |
| Price | $110.00 | $32.70 |
| Weight | 5.5 lbs | N/A |
| Guard Adjustment | Tool-Free | N/A |
| Carbide Edges | N/A | 3 |
Dimension comparison
Overview of the Products
When comparing the Milwaukee Electric M18TRADE BRUSHLESS 4-1/2 / 5 Cut-Off Grinder and the PRODIAMANT Fast Mortar Joint Cleaning tool, it's clear that these products serve different purposes. The Milwaukee grinder is a powerful tool designed for cutting, while the PRODIAMANT cutter focuses on mortar removal. The Milwaukee grinder is priced at $110.00, while the PRODIAMANT cutter is significantly cheaper at $32.70, making it about 70% less expensive.
Design and Build Quality
The Milwaukee grinder boasts a robust design, featuring a paddle switch for ease of use and tool-free guard adjustment. This makes it well-suited for demanding tasks. The PRODIAMANT cutter, on the other hand, is designed specifically for mortar cleaning with a focus on efficiency and precision. Its 8mm carbide cutter fits most angle grinders, ensuring compatibility. While the Milwaukee grinder ranks 29,839 in sales, the PRODIAMANT cutter sits at 57,692, indicating a relatively specialized market for the latter.
Performance Capabilities
In terms of performance, the Milwaukee grinder delivers an impressive 11,000 RPM, making it highly efficient for cutting through various materials. This high-speed operation is essential for professionals needing a reliable tool. Conversely, the PRODIAMANT cutter excels in mortar removal, featuring three tungsten carbide edges designed for smooth and controlled cutting. The cutter’s working length of 26 mm allows for full-depth cleaning, which is vital for effective repointing.
Features and Functionality
The Milwaukee grinder is equipped with overload protection and an electronic clutch, enhancing its longevity and safety during use. These features make it a versatile tool capable of handling various applications beyond just cutting. In contrast, the PRODIAMANT cutter focuses on a specific function—efficient mortar removal. Its design emphasizes quick and clean operation, which is beneficial for contractors and renovation projects. While the Milwaukee grinder has a broader range of functionality, the PRODIAMANT cutter excels in its niche.
Pricing Comparison
With the Milwaukee grinder priced at $110.00 and the PRODIAMANT cutter at $32.70, there is a significant difference in cost. The PRODIAMANT cutter is about 70% cheaper than the Milwaukee grinder. This price difference may influence purchasing decisions, especially for those on a budget or those who only need to perform mortar cleaning. However, those requiring a versatile cutting tool may find the investment in the Milwaukee grinder worthwhile.
Target Audience
The Milwaukee grinder is ideally suited for professionals and serious DIYers who require a high-performance tool for cutting various materials. Its features cater to those who need reliability and power in demanding environments. On the other hand, the PRODIAMANT cutter targets contractors and individuals focused on masonry work, specifically for cleaning mortar joints. Its specialized functionality makes it an excellent choice for those engaged in renovation projects.
Maintenance and Durability
In terms of durability, the Milwaukee grinder is designed for heavy-duty use, with features like an electronic clutch that enhances its lifespan. The overload protection ensures that the tool can withstand prolonged usage without significant wear. For the PRODIAMANT cutter, while it may not require as much maintenance due to its singular function, the quality of the carbide edges ensures long service life under normal working conditions. Each tool has its maintenance requirements, but the Milwaukee grinder may demand more attention due to its versatility.
Which should you buy?
Choosing between the Milwaukee Electric M18TRADE BRUSHLESS 4-1/2 / 5 Cut-Off Grinder and the PRODIAMANT Fast Mortar Joint Cleaning tool ultimately depends on your specific needs. If you require a powerful, multifunctional tool for various cutting tasks, the Milwaukee grinder is the better option, despite its higher price. However, if your primary focus is on efficient mortar joint cleaning and you want to save money, the PRODIAMANT cutter is a strong contender at a fraction of the cost.

