7/32" x 8-1/4" Simpson SDS-Plus Concrete Drill Bit - Carbide Tip, Pkg 25 MIT/HIT I-Joist & SCL Hangers They feature a large washer

They feature a large washer head for exceptional holding power and a bold thread design that bites quickly into wood

Pre-Punched Fastener Holes: Designed for proper fastener placement and consistent installation

Residential and Commercial Floor Joists: Securely fastens joists to headers

No Special Tools Required: The field-adjustable flanges simplify installation with standard framing tools

7/32" x 8-1/4" Simpson SDS-Plus Concrete Drill Bit - Carbide Tip, Pkg 25 MIT/HIT I-Joist & SCL Hangers They feature a large washerStrong Tie SDS Plus masonry drill bits feature a durable carbide tip and are designed for use in concrete, brick and block applications.