9 Piece Variable Multi Step Down Drill Bit Unibit Tool Uni Stepped Size Metal Bit

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Features: High quality HSS material construction Black and cobalt surface treatment Holds lubricant for smoother drilling Comes with aluminum carry case 1/4" Quick change shank: In 1/32" Increments: 13 Steps - 1/8" to 1/2" In 1/16" Increments: 6 Steps - 3/16" to 1/2". 9 Steps - 1/4" to 3/4". 12 Steps - 3/16" to 3/4". 8 Steps - 9/16" to 1". 10 Steps - 13/16" to 1-3/8". 12 Steps - 7/16" to 1-1/8". 10 Steps -1/4" to 1-3/8". 13 Steps - 1/8" to 7/8". Show more