Manufactured to NAS 907 Type J specifications Heavy duty construction for portable or machine drilling For use in drilling in high tensile strength alloy steels

#2 x 6 High Speed Aircraft Bit Cobalt

5/16-18 x 2 9/16 Hanger Bolt Driver

7/8-9 x 5 Hex Cap Screw SS 18-8 (A2)

31/32 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank) M20-2.50 Hex Cap Screws DIN 933 18-8 Stainless Steel (A2) Manufactured to NAS 907 Type31 32 x 6 Reduced Shank Drill Bit Cobalt (1 2 Shank) . Expands the size range capacity of a 1 2 inch portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. Precision ground for high degree of concentricity between shank and body diameter. Ideal for drilling in low and medium tensile strength materials.