1/4 Inch Cobalt Drill Bits 5pcs Heavy-Duty Metal Drill Bit Set for Steel, Cast Iron (1/4" x 4") Hoes the hardness of which is

the hardness of which is pretty high

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1/4 Inch Cobalt Drill Bits 5pcs Heavy-Duty Metal Drill Bit Set for Steel, Cast Iron (1/4" x 4") Hoes the hardness of which isAbout this item What You Get: This drill bit set for metal includes 5 ? 1 4 Inch x 4 Inch bits of the same size. A Must in Your Tool Box: This cobalt drill bit set is designed to surpass your expectations in terms of durability and performance, ensuring fast and easy penetration through hard metals. Heavy Duty Material: Our drill bits for hardened steel feature a heavy duty construction made with M35 cobalt, which has excellent durability and superior