Simpson CSD25400MG 1/4" X 4" Countersunk Head Split-Drive Anchor - Galvanized, Pkg 100 Quik Drive Cement Board Screws this anchor is also removable

this anchor is also removable

these collated screws are built for speed

these screws also enhance the look of your project by blending with wood tones

professional appearance while enhancing corrosion resistance

they drive fast and pull materials tight without the need to pre-drill

Simpson CSD25400MG 1/4" X 4" Countersunk Head Split-Drive Anchor - Galvanized, Pkg 100 Quik Drive Cement Board Screws this anchor is also removableThe 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