3/4 x 7 Titen HD Concrete Anchor Zinc Plated (5)

13/32 Cobalt Heavy Duty Jobber Drill Bit

1/2-13 Drop-In Anchor Zinc Plated (50)

Recommended for permanent dry

3/4-10 x 8 Grade 5 Hex Cap Screw Zinc Plated

1/4 Cobalt Heavy Duty Jobber Drill Bit (12) Drop-In Anchors Zinc Plated 3/4 x 7 Titen HD1 4 Cobalt Heavy Duty Jobber Drill Bit . Heavy duty construction made to Type J aircraft specifications. Used for drilling holes in hard, tough materials such as stainless steel, titanium, high temperature and high strength alloys. High red hardness of cobalt permits speeds 30% greater than standard heavy duty split point (HSS) drills.