Simpson CSD25212 1/4" X 2-1/2" Countersunk Head Split-Drive Anchor - Zinc, Pkg 100 Stainless Steel Large Diameter Concrete Screws Compared to a wedge anchor

Compared to a wedge anchor

Featuring a paddle-style drill point that penetrates dense wood without predrilling

Durable steel construction for long-term performance

Versatile Application: Intended for use with 6x6 lumber with a slotted base for adjustable installation

Use with compatible auto-feed screw guns for best performance

Simpson CSD25212 1/4" X 2-1/2" Countersunk Head Split-Drive Anchor - Zinc, Pkg 100 Stainless Steel Large Diameter Concrete Screws Compared to a wedge anchorThe Split Drive anchor is a one piece expansion anchor that can be installed in concrete, grout filled block and stone. As the anchor is driven in, the split type expansion mechanism on the working end compresses and exerts force against the walls of the hole. The Countersunk head allows for a smooth surface when attaching wood or light gauge steel to concrete and grout filled block surfaces. Installation: For Common Rafters: Drill a hole in base