IDEAL FLAT CHISEL [18 X 400 X 25] [SDS MAX] DEMOLITION HAMMER ACCESSORY [CARTON QTY: 50] - 20011
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Professional-Grade SDS Max Flat Chisel Built for the Toughest Demolition Jobs
The Ideal Flat Chisel 18 x 400 x 25mm with SDS Max shank is a heavy-duty demolition hammer accessory engineered for professional-grade breaking, scraping, and chiseling tasks. Featuring a broad 25mm flat blade and a full 400mm working length, this SDS Max chisel delivers exceptional impact resistance and high-torque performance, making it the go-to choice for contractors and tradespeople tackling demanding concrete demolition, tile removal, and mortar scraping applications. Sold in a carton quantity of 50 (Item No. 20011), it is ideal for bulk procurement on large-scale projects.
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- SDS Max Shank Interface: The SDS Max locking system provides a robust, tool-free connection to compatible rotary hammers and demolition hammers, ensuring zero slippage under the highest impact loads. The shank transmits full hammer energy directly to the blade, maximising chiseling efficiency on hard substrates like reinforced concrete and dense masonry.
- 18 x 400mm Overall Length with 25mm Blade Width: At 400mm total length, this chisel offers extended reach into deep cuts, wall cavities, and floor joints without requiring the operator to reposition frequently. The 25mm wide flat blade covers a broad surface area per strike, significantly reducing the number of passes needed to clear large sections of tile, render, or mortar.
- Hardened High-Carbon Steel Construction: Manufactured from premium hardened steel, the chisel body and blade are engineered to withstand repeated high-frequency impacts without deforming, chipping, or losing edge integrity. This ensures a longer service life even under continuous professional use on abrasive materials such as granite, brick, and reinforced concrete.
- Flat Blade Geometry for Versatile Demolition: The precision-ground flat blade profile is optimised for both horizontal scraping and vertical breaking. Whether lifting adhesive floor tiles, stripping old render from walls, or cutting through mortar beds, the flat geometry distributes impact force evenly across the blade edge, preventing premature wear and delivering clean, controlled results.
- Bulk Carton Quantity of 50 Units (Item No. 20011): Available in a carton of 50 chisels, this product is specifically designed for trade buyers, contractors, and tool hire companies that require consistent stock availability across multiple job sites. Bulk purchasing reduces per-unit cost and ensures teams are never without a critical consumable during intensive demolition phases.
This chisel is supplied ready for immediate use and is compatible with all leading SDS Max demolition hammer brands. It meets the performance standards expected of professional demolition accessories and is suitable for use in construction, renovation, and civil engineering environments.
General Purchase & Comparison Queries
What is the carton quantity and item number for this chisel?
This Ideal Flat Chisel 18 x 400 x 25mm SDS Max is sold under Item No. 20011 in a carton quantity of 50 units. This bulk packaging is designed for trade buyers, tool hire companies, and contractors who need reliable stock across multiple job sites. Purchasing by the carton offers a lower per-unit cost compared to individual purchases.
How does this SDS Max chisel compare to an SDS Plus chisel?
The SDS Max shank is a larger, heavier-duty interface than SDS Plus, designed for professional demolition hammers that deliver significantly higher impact energy. While SDS Plus chisels are suited for lighter rotary hammer work, the SDS Max system is the standard for heavy demolition tasks such as breaking reinforced concrete, thick masonry, and large-area tile removal. The two systems are not interchangeable without an adapter.
Is this chisel compatible with all SDS Max demolition hammers?
Yes. The SDS Max shank is an industry-standard interface, meaning this chisel is compatible with all major SDS Max demolition and rotary hammers from brands such as Bosch, Makita, Hilti, DeWalt, and Milwaukee. Always ensure your hammer is set to chisel-only mode (hammer without rotation) when using flat chisels to avoid blade damage.
Product-Specific and Usage Queries
What materials can the Ideal Flat Chisel 18 x 400 x 25mm cut or break?
This flat chisel is designed for use on a wide range of hard materials including concrete, reinforced masonry, brick, render, mortar joints, ceramic tiles, porcelain floor tiles, and asphalt. The hardened steel blade maintains its edge integrity across these abrasive surfaces, making it suitable for both interior renovation work and heavy outdoor demolition applications.
What is the significance of the 400mm length and 25mm blade width?
The 400mm overall length provides extended reach, allowing operators to work into deep floor joints, wall recesses, and confined spaces without repositioning. The 25mm wide flat blade maximises the surface area covered per impact strike, which is particularly effective for scraping adhesive residue, lifting floor tiles, and stripping render from large wall sections efficiently and with fewer passes.
Should the hammer be set to rotation mode when using this flat chisel?
No. When using any flat chisel accessory, your demolition or rotary hammer must be set to hammer-only mode (impact without rotation). Using rotation mode with a chisel can cause premature wear, blade damage, and potential safety hazards. Most SDS Max hammers feature a dedicated chisel mode; refer to your tool's manual to confirm the correct setting before use.
Problem/Solution-Oriented Queries
The chisel is not fitting into my SDS Max hammer — what should I check?
First, confirm that your hammer uses the SDS Max interface and not SDS Plus or another system — the two are visually similar but dimensionally different. Ensure the chuck collar is fully retracted before inserting the chisel shank, then push firmly until you hear or feel it click into the locking groove. If the shank still does not seat correctly, inspect the chuck for debris or wear. Do not force the chisel, as this may damage the locking mechanism.
The chisel blade is wearing out quickly — what could be causing this?
Rapid blade wear is typically caused by one of three factors: using the chisel in rotation mode instead of hammer-only mode, working on materials that exceed the chisel's rated hardness without adequate lubrication, or using a worn or underpowered hammer that causes the blade to scrape rather than impact cleanly. Ensure your hammer delivers sufficient impact energy (joules) for the material being worked, and always use the correct hammer mode. Rotating the chisel periodically during use can also help distribute wear more evenly.
Can I use this chisel for precision work or is it only for heavy demolition?
While the Ideal Flat Chisel 18 x 400 x 25mm is primarily engineered for heavy-duty demolition and material removal, it can be used for semi-precision tasks such as mortar joint cleaning, grout removal, and surface levelling when operated at a lower hammer energy setting. For highly detailed or fine chiseling work, a narrower pointed or scaling chisel would be more appropriate. This flat chisel excels where broad, consistent material removal is the priority.