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3Pcs HSS Titanium Coated Step Drill Bit Set, 1/4 Hex Shank Quick Change High Speed Steel Cone Drill Bit Kit for Plastic, Wood, Metal Sheet, Aluminum Hole Drilling (Metric 4-12mm/4-20mm/4-32mm)

Driak 4-52mm Metric HSS Titanium Surface Step Drill Bit Set for Wood Metal Hard Materials Hole Drilling Tool : Industrial & Scientific

Generic HSS Drill Bit Set High Speed Steel Shank Step Cone Drilling Bit For Metal Wood Hole Tools 3-12mm,4-12mm, 4-20mm,4-32mm 1pcs 4-22mm

DIN335D 90 Degree 3 Flute HSS Countersink Drill Bit with Morse Taper Shank for Metal Deburring - China Countersink Drill Bit, HSS Countersink Drill Bit

13pcs HHS 4241 Twist Drill Bits Hole Foret HSS Spiralbohrer Metaalboren with Straight Shank for Drilling Aluminum Plastic Wood - AliExpress

3Pcs HSS Titanium Coated Step Drill Bit Set, 1/4 Hex Shank Quick Change High Speed Steel Cone Drill Bit Kit for Plastic, Wood, Metal Sheet, Aluminum Hole Drilling (Metric 4-12mm/4-20mm/4-32mm)