which means you can use them when you work in the same wall without them coming loose

7/64 x 12 High Speed Aircraft Bit Cobalt

15/64 x 12 High Speed Aircraft Bit Cobalt

8 x 1 Simpson Flat-Head Marine Screw - Phillips Drive 316 SS - Box (100)

8 x 1 1/2 Simpson Flat-Head Marine Screw - Phillips Drive 316 SS - Box (100)

#9 x 6 High Speed Aircraft Bit Cobalt (6) Combo Flat Sleeve Anchors Zinc Plated which means you can use#9 x 6 High Speed Aircraft Bit Cobalt . Manufactured to NAS 907 Type J specifications Jobber flute lengths for drilling holes in hard to reach places Heavy duty construction for portable or machine drilling For use in drilling in high tensile strength alloy steels, stainless steels, titanium and other difficult to machine materials Made in the USA