Drill concrete, masonry and stone by combining rotation and hammer action.

SDS-plus Extreme bit 4x110x50mm DeWalt DT9502-QZ
Key features
- Diameter (mm)4
- Head typeCarbide grit
- Height (cm)19,6
- Working length (mm)50
- Masonry drilling typeSDS
- Application materialConcrete
What it is
The DeWalt DT9502-QZ is an Extreme range bit with an SDS-Plus shank, a diameter of 4 mm and a working length of 50 mm. The carbide head and two-cutting-edge body are designed for precise drilling in concrete, delivering clean, centred holes even at small diameters. Its compact geometry makes it ideal for precision work.
A masonry bit is a carbide-tipped bit for drilling concrete, brick and stone with a hammer drill or rotary hammer.
What it is for
Used for drilling reinforced concrete, in hammer or rotary hammer mode and for drilling solid and hollow masonry, clay brick and blocks.
How to use it
Choose the machine's shank type (straight, SDS-Plus or SDS-Max) and the diameter required by the wall plug. Start the hole at low speed, then engage hammer action, holding the bit square to the surface and without forcing, withdrawing it frequently to clear the dust. Clean the dust out of the hole before inserting the plug.
Where it is used
- Residential construction
- Building services
- Renovation
Technical data
- Diameter (mm): 4
- Head type: Carbide grit
- Height (cm): 19,6
- Working length (mm): 50
- Masonry drilling type: SDS
- Application material: Concrete
- Shank connection: SDS PLUS
- Pack: Label
Who it is for
Designed for electricians, plumbers, bricklayers and heating and plumbing engineers.
Related products
- SDS-plus Extreme bit 4x160x100mm DeWalt DT9503-QZ
- SDS-plus Extreme bit 3x110x50mm DeWalt DT9625-QZ
- Combi drill 18V XR Li-ion brushless DeWalt — from the category Hammer Drills, Drill Drivers and Rotary Hammers
- Percussion Anchor Spike, Mushroom Head, 6.5 x 50mm, Galvanised, Pack of 100, DeWalt DFM3110440 — from the category Heavy-Duty Anchors
- Rotary hammer 18V - bare unit DeWalt DCH273NT-XJ — from the category Rotary Hammers
- Browse the whole category: Drill Bits for Granite, Masonry and Concrete
Before you order
In your request, please state the length, the diameter, the connection type and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Specifications 8
| Diameter (mm) | 4 |
|---|---|
| Head type | Carbide grit |
| Height (cm) | 19,6 |
| Working length (mm) | 50 |
| Masonry drilling type | SDS |
| Application material | Concrete |
| Shank connection | SDS PLUS |
| Pack | Label |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Drill masonry and concrete and drive and tighten bolts, corded or cordless.
Fix medium and light items to walls by expanding in the hole.
For safety
Protect eyes and face from fragments, dust, splashes and impacts.
Protect breathing from dust, gases and vapours, including in oxygen-deficient atmospheres.





