the SNAPSKRU® anchor opens with an audible "pop

1-8 x 8 Grade 5 Hex Cap Screw Zinc Plated

1 1/4 x 6 Reduced Shank Drill Bit (1/2 Shank)

3/8 x 18 High Speed Long Boy

2-56 x 3/16 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10,000) Hanger Bolt Drivers the SNAPSKRU® anchor opens with2 56 x 3 16 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10,000) . Black Zinc is an acidic, low temperature powdered product developed to impart a black conversion coating of zinc die casting, galvanized stock and electroplated zinc parts. The black coating serves as a base for organic coatings (lacquers, paints, waxes and oils) and also provides an esthetic appeal.