CONFAST 1/4" x 1-1/4" Concrete Screws 410 Stainless Steel Hex with Concrete Drill Bit for Anchoring to Masonry, Block or Brick (50 per Box): Amazon.com: Industrial & Scientific
Tapcon 1/4 in. x 2-1/4 in. Hex-Washer-Head Concrete Anchors (75-Pack) 24325 - The Home Depot
8 Tips for Drilling Concrete and Installing Fasteners | Family Handyman