What Drill Bit

Concrete anchors

Everything for fastening to concrete, brick and block in one place — the anchor finder, the comparison chart, and a page for every anchor type.

Start here Which anchor? The concrete anchor finder — tell it your wall and load, and get the right anchor type and its bit rule. Open the anchor finder Reference Concrete anchor comparison chartTapcon, wedge, sleeve and drop-in side by side — strength, walls, removability and the bit rule.

By anchor type

Know the anchor already? Jump straight to its bit rule.

TapconBit is one size under Wedge1:1 · solid concrete only Sleeve1:1 · brick, block, concrete Drop-inBit is oversized · setting tool

Elsewhere on What Drill Bit

What drill bit for concrete? not sure what kind of bit you need?Drywall anchors hollow walls, not masonryWall & masonry the hubDrill bit size converter find or convert the bitDrill bit sizesGuides

Concrete-anchor sizing here is standard-convention guidance for DIY light-to-medium work. Always follow the size printed on the anchor packaging. For structural, heavy, seismic, or code-governed work, follow the manufacturer's engineered data and consult a structural engineer.