43 Inch

TOTAL 4341 HSS Drill bits & Step Drill Bits Set 14 of Pcs (HSS Drill Bits: 2/3/3/4/4/5/6/8mm, Step Drill Bits: 4-12mm 5 step/ 4-12mm 9 step/ 4-22mm 10 step, Countersink Bits: 12.4/16.5/20.5mm)– TACSDL61401

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3PCS HSS Step Bits, High Speed Steel Step Drill Bits Set (4-12mm, 4-20mm and 4-32 mm) Cone Drill Bits Hole Cutter for Wood, Stainless Steel, Sheet Metal

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RLT TOOLS 3PCS HSS Titanium Step Drill Bit Set – 4-12mm, 4-20mm, 4-32mm – Multi Size Hole Cutter for Metal, Wood, Plastic, Copper & Aluminum

Step Drill Bit Drill Bits Drill Bit Sharpener Cone Cutter Step Drill 6PCS Titanium Step Drill Bit Set 29 Sizes 4-32mm Drill Bits Set for Metal Sheet with Case Step Up Bits for DIY Lovers Metalworking