The Simpson Countersunk Head Crimp Drive® Anchor features a zinc-plated carbon steel construction

7/16-20 x 5 Socket Cap Screw Alloy

1/2-20 x 7 Socket Cap Screw Alloy

3/4-16 x 1 3/4 Hex Cap Screw SS 316 (A4)

Basic Major Diameter: 3

1/2" x 12" SDS-Plus Hammer Bit Drill Bit, SDS1212 1/2-20 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA The Simpson Countersunk Head CrimpSDS Carbide Tipped Drill Bits are designed for drilling stone or concrete. Carbide tipped tools feature cutting edges of carbide for wear resistance and a steel shank for toughness. Premium SDS Drill Bits are auto weld manufactured on first class German and Swiss equipment with a Japanese manufactured carbide tip.