Master Mechanic, 17/32" x 6", Silver & Deming High Speed Steel Black Oxide/Titanium Drill Bit, Black Oxide Finish Allows Improved 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.