DRILLCO DRL380C001 - #1Cobalt HD Stuby Drills Heavy DutyBrand Drillco Product SKU 380C001 Category Drills Size Number Material Cobalt Finish Coating Bronze Pack Quantity 12 Size 1 Overall Length 2. 7 16 Flute Length 1. 5 16 Description Screw Machine Drills are designed for use in machines and portable drilling in hard sheet metal alloys such as stainless and titanium. Because of their heavy duty construction and ease of penetration stemming from the split point with which they are normally furnished wide