as the anchor remains in place and allows you to use it repeatedly

1/4 x 1 3/4 Tie Wire Split Drive Anchor Zinc Plated (100)

1/2 x 6 Titen HD Concrete Anchor Zinc Plated (20)

0 x 50 Socket Cap Screw 12

17/64 Cobalt Heavy Duty Jobber Drill Bit (12) 1-14 Grade 5 Hex Cap Screws Zinc Plated as the anchor remains in17 64 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.