LONG-LASTING—Black and golden oxide coating extends bit life The SKIL 15-Piece Hex Shank Twist Drill Bit Set includes 15 twist drill bits with 1/4-inch hex shanks for use with both drills and impact drivers. The bits have a 135-degree split angle for fast and no-slip drilling, and their black and golden oxide coating provides long-lasting bit life The SKIL 15-Piece Hex Shank Twist Drill Bit Set includes 15 twist drill bits with ¼-inch hex shanks for use with both drills and impact drivers. PRO T34202 - 29-PC M2 HSS TiN-Coated Quick Release Hex Shank Brad Point Bit Set - Industrial, Inc 15 Piece Drill Bit Set SKIL® Hex Shank Twist Drill Bit Set - 15 Piece 135 Degree Split Point Bits 1/4-INCH HEX SHANK—Fits both drills and impact drivers 15 Piece | Gold Series Hex Shank Drill Set - Alpha Tools 135-DEGREE SPLIT ANGLE—Allows fast and no-slip drilling The bits have a 135-degree split angle for fast and no-slip drilling, and their black and golden oxide coating provides long-lasting bit life.