Triple Spiral Flute Cobalt Drill Bit Set (Pro - TiAlN Coated), Metal Drill Bit Set for Steel, Hardened Metal, Stainless Steel, 21PCS Drill Bits 1/16" to 1/2" with Index Storage Case
Three-Flute Spiral Design: The Unique Triple-Flute Design Provides Higher Roundness, Smoother Wall Surfaces, Superior Chip Removal Capabilities and Better Heat Dissipation Performance, Revolutionary Improvement in Drilling Efficiency ; Cutting speed increased by 40%; feed rate for deep hole machining increased by 50%; chip removal efficiency increased by 40%)
21-Piece Cobalt Drill Bits Set - Includes Metal Drill Bits: 1/16"(*2), 5/64"(*2), 3/32"(*2), 7/64"(*2), 1/8"(*2), 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 5/16", 3/8", 1/2" with Index Storage Case.
Titanium Aluminum Nitride Coating (TiAlN) - Increases surface hardness to 89HRC with outstanding heat-resistance, so your drill bit cuts fast and stay sharp.
ZNXIMER Cobalt Drill Bit Set Pro - A Metal Drill Bit Set for Steel, Hardened Metal, Stainless Steel. Consisting of 21 titanium aluminum nitride coated cobalt drill bits with Triple Spiral Flute and 135° Split Point Tip offers exceptional performance specifically for drilling through metal.
Quality commitment - If you are not fully satisfied for any reason, Please contact us for 100% refund or replacement. Have any questions, Please feel free to contact us and we will be happy to assist you.
