Since the anchor is pre-expanded

27/32 x 6 Reduced Shank Drill Bit (1/2 Shank)

9/16-12 x 7 Socket Cap Screw Alloy

7/8-9 x 8 Grade 5 Hex Cap Screw Zinc Plated

7/16-20 x 6 Socket Cap Screw Alloy

1/2 x 8 Titen HD® Heavy-Duty Screw Anchor Mechanically Galvanized (20) Magnetic Bit Holders Since the anchor is pre-expanded1 2 x 8 Titen HD Concrete Anchor Mech Galvanized (20) . The TITEN HD anchor is a patented, high strength screw anchor for concrete and masonry. It is designed for optimum performance in both cracked and uncracked concrete; a requirement that the 2006 IBC places on post installed anchors. The high strength, easy to install TITEN HD anchor has been tested and shown to provide outstanding performance in cracked and uncracked concrete under both static