Rotary impact masonry drill bits for drilling into brick, block, concrete and stone. Available in a wide range of diameters from 3mm to 25mm and lengths from 75mm to 400mm. Suited to SDS-plus and standard rotary impact drills.
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Size
Price
QTY
3.0 x 75mm
£0.66£0.79
4.0 x 85mm
£0.71£0.85
4.0 x 150mm
£0.89£1.07
5.0 x 85mm
£0.74£0.89
5.0 x 150mm
£0.90£1.08
5.5 x 100mm
£0.79£0.95
5.5 x 150mm
£0.90£1.08
6.0 x 100mm
£0.89£1.07
6.0 x 150mm
£0.97£1.16
6.0 x 200mm
£1.48£1.78
6.0 x 300mm
£2.73£3.28
6.0 x 400mm
£3.96£4.75
6.5 x 100mm
£0.89£1.07
6.5 x 150mm
£0.98£1.18
7.0 x 100mm
£0.98£1.18
7.0 x 150mm
£1.08£1.30
7.0 x 200mm
£1.86£2.23
7.0 x 300mm
£2.88£3.46
8.0 x 120mm
£1.09£1.31
8.0 x 150mm
£1.26£1.51
8.0 x 200mm
£1.84£2.21
8.0 x 300mm
£3.26£3.91
8.0 x 400mm
£4.92£5.90
10.0 x 120mm
£1.26£1.51
10.0 x 150mm
£1.63£1.96
10.0 x 200mm
£2.37£2.84
10.0 x 300mm
£3.14£3.77
10.0 x 400mm
£4.25£5.10
12.0 x 150mm
£1.87£2.24
12.0 x 200mm
£2.62£3.14
12.0 x 300mm
£3.89£4.67
12.0 x 400mm
£4.86£5.83
14.0 x 150mm
£2.46£2.95
14.0 x 200mm
£3.06£3.67
14.0 x 300mm
£3.92£4.70
14.0 x 400mm
£4.97£5.96
16.0 x 150mm
£2.85£3.42
16.0 x 200mm
£3.75£4.50
16.0 x 400mm
£5.82£6.98
18.0 x 160mm
£3.28£3.94
20.0 x 160mm
£3.83£4.60
20.0 x 200mm
£4.91£5.89
20.0 x 400mm
£7.96£9.55
25.0 x 400mm
£9.90£11.88
These rotary impact masonry drill bits are designed for drilling into brick, concrete, blockwork, and natural stone using a standard rotary impact drill or SDS-plus machine. Whether you are fixing shelving into a brick wall, running conduit through a concrete floor, or hanging radiators off a breeze block partition, masonry drill bits like these are what you reach for first. The range covers diameters from 3mm through to 25mm and lengths from 75mm up to 400mm, so you have the right bit for shallow pilot holes and deep core runs alike.
The carbide tip on each bit does the real work. Tungsten carbide is hard enough to survive the repeated hammering that rotary impact drilling delivers, and it stays sharp longer than a plain steel tip would on abrasive masonry surfaces. The flute geometry along the shank clears dust as you drill, which keeps the bit cutting cleanly rather than grinding against its own debris. If you have ever watched a bit smoke and slow to a halt because the flute was packed solid, you will appreciate why this matters.
Where Rotary Impact Masonry Drill Bits Get Used
On a construction site, masonry drill bits go into the tool bag without a second thought. Electricians use them to run cables through walls. Plumbers drill them through concrete to route pipework. Joiners fix studwork to solid walls. General builders use them daily for anchor bolts, frame fixings, and rawlplug holes. The longer lengths, particularly the 300mm and 400mm options, are useful when you need to drill through a full-thickness block or masonry cavity wall without stopping to change bits.
The shorter lengths, from 75mm to 120mm, suit lighter fixings where you only need to go 50 to 70mm into the face of the wall. Use the longer bits when you are fitting structural anchors or need to pass completely through a wall. Getting the length right matters more than most people think. A bit that is too short for the hole means stopping halfway through and repositioning, and that is when you get a wobbly or oversize hole.
Choosing the Right Diameter
Match the bit diameter to your fixing. For standard brown and red rawlplugs, a 6mm or 7mm bit is typical. Yellow plugs usually need a 5mm hole. Larger anchor bolts for structural fixings will require 10mm, 12mm or above. When in doubt, check the plug or anchor manufacturer’s recommendations before drilling, not after. Drilling a 10mm hole for an 8mm fixing is a habit worth breaking early in your career.
These masonry drill bits are sold individually, so you can pick up the exact size you need rather than buying a set that includes five sizes you never use. Prices start from under a pound for the smaller diameters, making it straightforward to keep spares on the van without spending much at all.
Pro Tip: When drilling deep holes in masonry with a 300mm or 400mm bit, withdraw the bit every 50mm or so to clear the flute and let the tip cool slightly, particularly in dense concrete where heat builds up fast.
Rotary impact masonry drill bits are used across most trades that work with solid walls and floors. Electricians, plumbers, and heating engineers rely on them daily for chasing cables and pipes through brickwork and blockwork. Builders use them for wall plate fixings, anchor bolts, and structural brackets. The range of sizes available makes them suitable for everything from a 3mm pilot hole in a facing brick to a 25mm clearance hole through a concrete floor slab. They work on brick, engineering brick, dense and lightweight concrete block, sand and cement render, and natural stone such as limestone and sandstone.
Best For
Drilling fixings into brick and blockwork
Running cables and pipes through masonry walls
Anchor bolt and rawlplug holes
Structural fixings into concrete
Deep drilling through cavity walls using 300mm and 400mm lengths
Compatible Surfaces
Brick and engineering brick
Dense and lightweight concrete block
Poured and reinforced concrete
Sand and cement render
Natural stone including limestone and sandstone
Key Specifications
Diameters: 3mm to 25mm
Lengths: 75mm to 400mm
Tungsten carbide tipped
Suitable for rotary impact drills and SDS-plus machines
Dust-clearing flute design
Sold individually
Not suitable for: These bits are not suitable for use in rotary-only mode on hard tile or ceramic. They are also not designed for use in SDS-max machines or for drilling through steel reinforcement bar embedded in concrete.
Fit the bit securely into the drill chuck or SDS collet before starting. Select rotary impact or hammer mode on the drill. Apply steady, even pressure without forcing the bit, and let the hammering action do the work. Ease off on pressure as the bit breaks through to the back face of the wall to avoid blowout.
For holes deeper than 100mm, withdraw the bit periodically to clear debris from the flute. This keeps the cutting tip cooler and prevents the hole from packing with dust, which can cause the bit to bind or overheat. On very long runs through dense concrete, a brief pause every 50mm is good practice.
Select the correct bit diameter for your plug or anchor type before drilling
Fit the bit securely into the drill chuck or SDS-plus collet and check it is seated properly
Set the drill to rotary impact or hammer mode
Mark the hole position on the masonry surface and position the tip accurately before applying power
Apply firm, even forward pressure and begin drilling at low speed to establish the hole position
Increase speed once the tip is seated and allow the hammer action to drive the bit through
Withdraw the bit every 50 to 75mm on deep holes to clear the flute and prevent overheating
Ease off pressure as the bit approaches the back face of the wall to reduce breakout
Remove dust from the hole before inserting a plug or anchor
Will these bits work in a standard combi drill as well as an SDS machine?
Yes. These are rotary impact masonry drill bits with a standard round shank, so they fit a standard three-jaw chuck on a combi drill as well as compatible SDS-plus chucks with the appropriate adapter. For heavy or continuous drilling into hard concrete, an SDS machine will be more efficient, but for general brick and block work a combi drill is perfectly adequate.
How do I choose the right length for my job?
As a rule, the bit needs to be long enough to reach the full depth of the fixing hole plus a bit to spare for the chuck and any surface material. For a 75mm rawlplug hole, a 100mm or 120mm bit is about right. For drilling through a full-thickness block or a cavity wall, choose a 300mm or 400mm bit depending on the wall construction. Measuring the fixing depth before you start saves a trip back to the van.
Can these bits be used on natural stone or is that too hard for them?
These tungsten carbide tipped bits will drill through most common natural stones used in UK construction, including limestone, sandstone, and softer granite. Very hard or dense granite may wear the tip faster than brick or block would, so expect to work at a slower pace and check the tip condition regularly. Extremely hard igneous stone such as flint is likely to be challenging and will shorten tip life considerably.
Each bit is constructed with a tungsten carbide tip brazed to a hardened steel shank. Tungsten carbide provides the hardness and wear resistance needed to withstand the repeated percussion of rotary impact drilling in abrasive masonry materials. The helical flute along the body of the bit is designed to evacuate dust continuously during drilling, reducing friction and heat at the cutting tip. The standard cylindrical shank suits both three-jaw chucks and SDS-plus adapters.
5.5 x 100mm, 6.0 x 100mm, 6.0 x 150mm, 6.0 x 200mm, 8.0 x 120mm, 8.0 x 150mm, 8.0 x 200mm, 8.0 x 300mm, 10.0 x 120mm, 10.0 x 150mm, 10.0 x 200mm, 10.0 x 300mm, 10.0 x 400mm, 12.0 x 150mm, 12.0 x 200mm, 12.0 x 300mm, 12.0 x 400mm, 14.0 x 150mm, 14.0 x 200mm, 14.0 x 300mm, 14.0 x 400mm, 16.0 x 150mm, 16.0 x 200mm, 16.0 x 400mm, 18.0 x 160mm, 20.0 x 160mm, 20.0 x 200mm, 20.0 x 400mm, 25.0 x 400mm, 3.0 x 75mm, 4.0 x 150mm, 4.0 x 85mm, 5.0 x 150mm, 5.0 x 85mm, 5.5 x 150mm, 6.0 x 300mm, 6.0 x 400mm, 6.5 x 100mm, 6.5 x 150mm, 7.0 x 100mm, 7.0 x 150mm, 7.0 x 200mm, 7.0 x 300mm, 8.0 x 400mm
Box Quantity
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