9/16" x 18" Simpson SDS-Plus Concrete Drill Bit, Carbide Tip, Pkg 1 DSC Drag Strut Connectors Attaching fiber-cement board

Attaching fiber-cement board

Replacement test keys sold separately

Factory-positioned hex nuts and plate washers help simplify installation and ensure the proper hardware is readily available during construction

these screws are strong enough to hold tight in concrete and resist rust

This product is intended for use with Rough Cut 4x6 lumber but is also available in other sizes

9/16" x 18" Simpson SDS-Plus Concrete Drill Bit, Carbide Tip, Pkg 1 DSC Drag Strut Connectors Attaching fiber-cement boardStrong Tie SDS Plus masonry drill bits feature a durable carbide tip and are designed for use in concrete, brick and block applications. California Residents: WARNING