Tungsten carbide tip is durable when drilling in concrete and brick. The deep single flute removes drilling dust fast. Bit has a zinc finish. Tungsten carbide tip is durable when drilling in concrete and brick The deep single flute removes drilling dust fast Bit has a zinc finish UPC 042526611704 ASIN B000VYBHXO Model 61170 Set Name 5-Piece Brand Name IRWIN Shank Type Straight Unit Count 5 Count Item Weight 0.01 Ounces Part Number SBD61170 Point Style Diamond Point Finish Types Brushed Manufacturer IRWIN Material Type Blend Item Type Name DRILL BIT 5PC SET MSNRY ECONO Item Dimensions 9 x 2 x 0.92 inches Tool Flute Type tool_flute Number of Flutes 1 Number of Pieces 1 Included Components DRILL BIT 5PC SET MSNRY ECONO Surface Recommendation Masonry Global Trade Identification Number 00042526611704