ROTARY MASONRY DRILL BIT - 1/4" x 4"1/4" rotary masonry drill bit for clean, fast drilling in brick, cinder block, concrete block, and ceramic tile. The carbide tip cuts the masonry and the fast-spiral double flute clears chips quickly so the bit doesn't bind or overheat in deep holes.
- Carbide-tipped head for long life in hard masonry
- Fast-spiral double flute for rapid chip removal
- For brick, cinder block, concrete block, and ceramic tile
- Round shank - use in a corded or cordless rotary drill only
- NOT for hammer drilling and NOT for SDS or SDS-Plus rotary hammers
- Bit size: 1/4" diameter x 4" overall length
Tip: 1/4" is the standard pilot size for 5/16" Tapcon-style concrete screws and for #14 plastic conical wall anchors. Run the drill at a moderate speed with steady pressure and back the bit out every inch or so to clear dust from the flutes.