Cobalt Alloy Steel Drill Bit Set. Sizes 1/16 inch -1/2 inch in 1/64 inch increments, 135 Degree Split Point To Minimize Walk. 5% Cobalt Alloy Steel For Higher Heat & Abrasion Resistance. Heavy Duty Web Construction For Strength & Durability. Item dimensions L x W x H. 12 x 7.5 x 4 inches. 024721065131 072090456609 013317064573 640026835608 247210851538 031112513171 024721631381 643749770621 640024789705 013588056437 031113081044 971473194087 024721085153 787721785538 080850305630 735090418502 732454799673 971473194070. Global Trade Identification Number.