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Silver 18-inch masonry drill bit with black oxide finish and carbide tip

Drill America

Drill America DAM18X5/8 Carbide-Tipped Masonry Drill Bit 18

SKU CH-Q9GB-NPD7C

Carbide-tipped masonry bit drills brick, concrete and sandstone with wide flutes for fast dust removal

  • Product typeDrill Accessories
  • Carbide-tipped for long life in hard masonry
  • 18" overall length reaches deep holes
  • Black oxide finish resists corrosion
  • 118-degree conventional point starts cleanly in brick and concrete
  • Wide spiral flutes remove dust quickly in soft materials

Drill Bit for Masonry Work

This 18 inch carbide-tipped drill bit is built for boring into brick, concrete and sandstone. The black oxide finish adds corrosion resistance while the 1/2 inch round shank fits standard portable electric drills. It is a single-piece accessory suited for trade and DIY anchoring tasks.

Upgrade from Worn or Shorter Bits

The wide spiral flutes clear dust faster than narrow-flute designs in softer masonry, reducing binding during deep holes. Carbide tips brazed to steel bodies extend service life compared with plain steel bits. The jump is worth it when hole depth exceeds the reach of shorter bits or when anchor clearance matters.

Suited for Anchor Installations

Contractors and homeowners setting expansion shields, toggle bolts or anchor screws gain the extra clearance this bit provides. The 118 degree conventional point starts cleanly in the listed materials. Users needing SDS shanks, hammer-drill-only bits or diameters not listed should look at other options.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

What size chuck does the 1/2" round shank require?

The 1/2" round shank fits a standard 1/2" drill chuck; tighten all three jaws evenly so the bit runs true and does not slip under load.

How should I start the hole to keep the 118-degree point from wandering?

Apply firm, steady pressure at low speed until the carbide tip bites, then increase speed; letting the drill spin fast before contact is the step most users get wrong.

When will the carbide tip need replacing?

Replace the bit when the carbide tip shows visible wear or drilling in brick, concrete or sandstone becomes noticeably slower despite proper speed and pressure.

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