Drilling into concrete, brick, block, or tile is one of the most common jobs on a renovation site, and the masonry drill bit you choose decides how fast the hole opens, how straight it runs, and how many holes the bit survives. A standard twist drill spins uselessly against hard aggregate, while the right carbide-tipped bit drives through a foundation wall in seconds. The basics of drilling into concrete start with matching the bit to the material and to the hammer action that powers it. This article covers the main bit families, the shank systems that connect them to your drill, and how clearance sales reshape the tool aisle.
The Main Masonry Drill Bit Families
Masonry bits are built around a carbide tip attached to a steel body, and the tip geometry, shank, and flute design change with the job. The quickest way to sort the options is by what the bit is designed to penetrate. If one bit needs to move between concrete, tile, and wood, multi-material drill bits use a specialized cutting geometry that handles each material without chipping the tile or overheating in concrete. Four families cover nearly every masonry application.
| Bit family | Shank | Best material | Typical price per bit |
|---|---|---|---|
| Standard carbide-tipped masonry bit | Round with three flats | Brick, block, soft concrete | $2 to $8 |
| SDS-Plus masonry bit | SDS-Plus, 10 mm | Concrete and reinforced concrete | $5 to $15 |
| SDS-Max masonry bit | SDS-Max, 18 mm | Heavy concrete and coring | $15 to $60 |
| Multi-material bit | Round or hex | Tile, masonry, wood, metal | $4 to $12 |
| Tile and glass spear-point bit | Round | Ceramic tile, glass, porcelain | $3 to $9 |
Hammer drill bits
The standard masonry bit has a carbide tip and a round shank with three flats that lock into a keyed or keyless chuck. It works with a hammer drill in rotation-plus-hammer mode. These bits handle brick and block well and manage light concrete, but they stall or dull quickly on hard aggregate and rebar. Speed is the main variable: at high RPM the carbide overheats and the tip glazes over, so the bit stops cutting and starts burning.
SDS system bits
SDS-Plus and SDS-Max bits use a slotted shank that slides into a matching chuck on a rotary hammer. The chuck lets the bit piston forward and back while the hammer delivers impact energy directly to the tip, so the force lands where the cutting happens instead of shaking the whole tool. SDS-Plus shanks measure 10 mm and SDS-Max shanks 18 mm. Rotary hammers with SDS chucks drill larger holes much faster than hammer drills because the impact energy comes from an internal piston rather than the chuck hammering the tool body.
What the numbers on a bit mean
The markings on a masonry bit tell you the diameter in millimeters or inches, the working length, and sometimes the maximum drilling depth rating. A 10 x 150 mm SDS-Plus bit drills 10 mm holes up to 150 mm deep. Keep those numbers in mind when comparing sets, because the working length, not the overall length, determines how deep you can go into a wall or slab.
How Clearance Sales Reshape the Tool Aisle
When a retailer clears out drill bits at steep discounts, it usually signals a change in how that store allocates shelf space, not a problem with the product itself. Brands get clearanced when a retailer consolidates suppliers, when a line is discontinued, when packaging changes, or when a seasonal reset makes room for different inventory. Clearance prices vary by SKU, zip code, and local stock, so the same bit can be 20 percent off at one store and 60 percent off ten miles away.
A useful example came in early 2022, when masonry bits from one major brand group appeared on clearance at a national home improvement chain at the same time as bits from its parent company. Store employees reported that the retailer planned to carry a single brand of bits going forward. The report was never confirmed, but the pattern is common: shelf space is scarce, and retailers reassign it constantly. Shoppers who understand that can also track predictable seasonal clearance cycles around holidays and inventory resets, when the deepest markdowns on tools and accessories tend to appear.
How to shop a clearance rack without wasting money
- Check the original price before you buy. A 40 percent discount on an inflated list price is not a deal.
- Compare the clearance price with the current online price for the same SKU.
- Inspect the packaging for damage and confirm the size is the one you need.
- Buy common sizes first: 3/16, 1/4, 5/16, 3/8, and 1/2 inch cover most anchor and fastener jobs.
- Remember that clearance stock is often final sale, so test the fit in the store.
The catch with clearance masonry bits is availability. Online, the useful sizes sell out within days; in store, clearance endcaps get picked clean quickly. If you spot a good price on a size you use regularly, buy it then, because restocking is unlikely.
Matching the Bit to the Material
Choosing the right bit starts with the substrate. Concrete with hard aggregate demands an SDS bit or a high-quality carbide-tipped hammer drill bit; brick and block are softer and let standard masonry bits last longer; ceramic tile calls for a spear-point or diamond-tipped bit run without hammer action until the glaze is broken. The selection logic differs from choosing drill bits for wood, metal, and masonry work, where cutting edges and flute geometry do the work instead of impact energy.
Step by step: drilling a clean hole in concrete
- Mark the hole location and confirm there are no embedded pipes or rebar in the path.
- Start with a smaller pilot bit, 1/8 or 3/16 inch, to establish the position.
- Switch to the final size and run the drill at slow speed with steady, firm pressure.
- Let the hammer action do the work. Push hard enough to keep the bit cutting but not so hard that the flutes clog.
- Pull the bit out periodically and clear the dust from the hole.
- For deep holes, use a dust extraction attachment or hold a shop vacuum nozzle at the collar.
Common mistakes include running at full speed, which burns the carbide tip; letting the bit wander at the start, which produces egg-shaped holes; and forcing a dull bit, which generates heat and snaps the shank. Use a depth stop or a tape marker when the hole depth matters, such as for anchors that must sit at a specific embedment depth.
Dust Control and Anchor Preparation
Masonry drilling produces fine dust that is a health hazard and a nuisance on site. Dust-extracting hammer drill bits pull debris through internal channels or work with vacuum collars so the hole stays clean and visible. Clean holes matter most when you install anchors, because dust packed at the bottom of the hole keeps the anchor from seating and reduces pullout strength.
Preparing a hole for an expansion anchor
- Drill to the depth the anchor requires, plus a little extra for dust.
- Blow out the hole with a hand pump or vacuum the dust from the bottom.
- Brush the walls of the hole to loosen clinging dust.
- Insert the anchor and confirm it reaches the correct depth before driving it.
- For epoxy systems, clean and dry the hole completely before injecting adhesive.
A 1/4 inch expansion anchor in a clean hole can hold noticeably more weight than the same anchor in a dust-filled hole, because the expansion sleeve needs full contact with the concrete wall. The extra minute spent cleaning pays off in pullout tests and in service, especially on overhead work where a failed anchor means a dropped fixture.
Hammer Drills vs Rotary Hammers and SDS Shanks
The tool that spins the bit matters as much as the bit itself. Hammer drills use a mechanical clutch to produce rapid vibration while the chuck spins, and they suit holes up to about 1/2 inch in brick and light concrete. Rotary hammers deliver true impact energy through an SDS chuck and handle larger diameters, deeper holes, and rebar-laden concrete. Understanding the difference between a rotary hammer and SDS drill bits prevents you from overspending on a bit your drill cannot drive properly.
| Feature | Hammer drill | Rotary hammer |
|---|---|---|
| Impact mechanism | Mechanical clutch | Pneumatic piston |
| Shank | Round with flats | SDS-Plus or SDS-Max |
| Practical hole size | Up to 1/2 inch | 1/4 inch to 2 inches and up |
| Best materials | Brick, block, light concrete | Concrete, reinforced concrete |
| Typical tool price | $60 to $200 | $150 to $600 |
If you already own a hammer drill, standard carbide-tipped bits are the economical path. If you regularly drill into poured concrete or need holes larger than 1/2 inch, a rotary hammer with SDS-Plus bits pays for itself in speed and bit life. Rotary hammers also transfer less vibration to the operator because the impact stays inside the tool, which matters for all-day drilling work.
Building a Practical Masonry Drilling Kit
A sensible kit covers the hole sizes you actually use. For most renovation and anchoring work, that means 3/16, 1/4, 5/16, 3/8, and 1/2 inch bits in both standard and SDS-Plus versions if you own both tools. Add a spear-point tile bit and a dust extraction option. When you buy, impact-rated masonry drill bits survive repeated hammer action better than general-purpose bits, because the carbide grade and body hardening are matched to impact drilling.
Sets versus single bits
Sets look economical, but they usually include sizes you rarely use. Buy singles for the sizes you burn through, and buy a small set only for a new jobsite kit or a vehicle kit. Premium carbide bits cost two to three times as much as budget bits and last several times longer in hard concrete, which makes the premium option cheaper per hole when you drill often.
Store masonry bits so the tips do not knock against each other, and keep them separate from wood and metal bits. A worn tip can be resharpened on a diamond wheel a few times, but once the carbide is chipped, replace the bit. Check the tip before each job, keep the flutes clear, and match the bit to the hammer action. A single set maintained this way can carry you through years of concrete work.