Designed for those who demand precision and strength, these bits provide the power to create clean, professional-grade holes across a wide range of materials. Comprehensive Sizes: Includes a combination of 31 sizes with three drill bits – 13 step drill bits (1/8" to 1/2"), 6 step drill bits (3/16" to 1/2"), and 12 step drill bits (3/16" to 7/8").
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