4-12 4-20 4-32MM HSS Cobalt Step Drill Bit Set Nitrogen Spiral for Metal Cone Hole Bit Opener Spiral Cobalt Step Drill Bit

👍: 96.3%

3Pcs/Set 4-32MM HSS Cobalt Step Drill Bit Set Nitrogen High Speed Steel Spiral for Metal Cone Triangle Shank Hole Bit Opener

👍: 90.8%

HSS 4241 Cobalt Step Drill Bit Set, Metal Drilling Hole Tools, 5Pcs Cone Drill Bits for Metal Iron Aluminum Copper Steel & Wood

👍: 95.6%

HSS 4241 Cobalt Step Drill Bit Set 5/6pcs Metal Drilling Hole Tools,Cone Drill Bits for Metal Iron Aluminum Copper Plastic&Wood

👍: 89.7%

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