Drillco® Aircraft Extension Drill Bit, #30, High Speed Cobalt, 1-5/8" Flute, 135° Point Dust Collector Fittings you get more material cut

you get more material cut per charge and unmatched run-time in all applications

engineered ceramic grain and shape

Liquid filled glycerin gauge accurately shows pressing force

High-leverage blades open independently up to 270 degrees

Diablo made Dura-Carbide™ features up to 2X more carbide that withstands up to 1800°F of intense heat to combat rebar hits versus standard bits that fail at 800°F

Drillco® Aircraft Extension Drill Bit, #30, High Speed Cobalt, 1-5/8" Flute, 135° Point Dust Collector Fittings you get more material cutManufactured to NAS 907 Type J specifications, 135 degree split point, surface treated with jobber flute lengths for drilling holes in hard to reach places Heavy duty construction for portable or machine drilling in high tensile strength alloy steels, stainless steels, titanium, and other difficult to machine materials Specifications Material High Speed Cobalt Drill Size #30 Decimal Drill Size 0. 1285" Overall Length 12" Flute Length 1 5 8" Point