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Greenlee - Multi-Hole Step Bit: 3/8″ Shank Dia, Steel, 4 Hole Sizes - 16754459 - MSC Industrial Supply
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Airgas - WAL890A005 - Drillco Series 8900 1/4" - 1 3/8" X 1/16" Bright HSS 10 Hole Multi-Step Drill Bit With 1/2" Straight Shank
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Greenlee - Multi-Hole Step Bit: 3/8″ Shank Dia, Steel, 15 Hole Sizes - 16754483 - MSC Industrial Supply
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Amazon.com: Aleric Step Drill Bit Set - Titanium Coated, High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers,3pcs :
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Dormer G314630 | 0.3937" Diameter x 3.8583" OAL Bright Coated Step Drill Bit - All Industrial Tool Supply
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