Simpson's Hex Head Titen Turbo™ Concrete and Masonry Screw Anchor provides superior durability and corrosion resistance with its zinc plating and ceramic coat. This 1/4 x 6 anchor is designed to perform in concrete, grout-filled and solid masonry applications and is ideal for heavy-duty fastening, offering a 5/16 inch hex head. The box of 100 ensures you have the quantity you need for your job.