Standard Plumbing Supply 120592 DISSTON COMPANY Black Oxide Drill Bit, 9/16 x 6" Master Mechanic, 9/16" x 6", Silver Deming, High Speed Steel, Black Oxide/Titanium Drill Bit, Jobber Length, 1/2" Reduced Shank, 3-1/8" Flute Length, Black Oxide Surface Finish Improves Chip Flow Increases Abrasion Resistance, Recommended For Drilling Wood, Plastic Soft Metals, Used In Machine Shops Using Screw Machines Or Where The Maximum Chuck Capacity Is 1/2", Carded. Features The product is a MM9/16x6 Black Oxide Drill Bit Purpose of use for Power Tool Accessories, core-drill-bits Manufactured in China USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.