The split drive anchor is a one-piece tamper-resistant

Ideal for securing clips used in standing seam roofing

Diameters over 1 1/2 inches meet or exceed ASTM A354 Grade BD

#42 Heavy Duty Drill Bit - Stubby Length

9/32 Cobalt Heavy Duty Jobber Drill Bit

#26 x 6 High Speed Aircraft Bit Cobalt (6) Grade 2 Finished Hex Nuts Zinc Plated The split drive anchor is#26 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