Simpson CD25118T 1/4" Tie Wire Crimp Anchor - Zinc, Pkg 100The Simpson Strong Tie Crimp Drive anchor is an easy to install expansion anchor for use in concrete and grout filled block. The pre formed curvature along the shaft creates an expansion mechanism that secures the anchor in place and eliminates the need for a secondary tightening procedure. The Tie Wire head is designed for acoustical wire, which is commonly used for hanging sprinkler pipes and suspended ceiling panels. Installation: Warning: Industry