Dewalt, Dw1614, Metal Drilling, Drilling Accessories, Black Oxide Bits, Black 1/2" X 12" Black Oxide Drill Bit The Dewalt 1/2" X 12" Black Oxide Drill Bit Is An Extremely Durable And Useful Attachment. Use This To Increase Your Drilling Efficiency And Decrease Your Work Time. Superior Build Quality Means You Will Be Using This Bit For Years With Minimal Wear And Tear. A Must Have For Any Professional Or Do-It-Yourselfer. Features: 135 Degree Split Point Drills On Contact And Prevents Walking - Extended Length Drills In Hard To Reach Spaces - Black Oxide Coated For Greater Wear Resistance - Specifications: Quantity/Card: 1 - Diameter: 1/2" - Shank Size: 3/8" - Overall Length: 12" - Dewalt Is Firmly Committed To Being The Best In The Business, And This Commitment To Being Number One Extends To Everything They Do, From Product Design And Engineering To Manufacturing And Service.