Black & Decker Master Mechanic, 282657, SDS Shank Black Oxide Masonry Bit, 3/8" x 6", Max Depth 4", Carded, SDS Shank Masonry Drill Have A Black Finish Which Provides Aggressive Chip Flow & Abrasion Resistance, The Asymmetrical Flute Design Provides Faster Dust Removal & Precise Penetration Into The Work Piece, SDS Shank Rotary Masonry Drill Bits Are Designed For Drilling In Wet & Dry Concrete, Plaster, Tile, Any Type Of Brick, Marble, Granite & Concrete Over 6000 PSI, The Negative Point Angle Provides Faster High Impact Penetration When Used With A Hammer Drill Or With A Drill In The Percussion Mode.