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toolant Cobalt Center Drill Bit Set
Wide Application
【Durable & Long-Life with Top Quality】M35 Cobalt High Speed Steel (5% Cobalt) with TiAlN Coating makes our center drill bit much harder, more wear-resistant, heat-resistant and durable. Arc-shaped root of the drill bit tip reduces the risk of breaking greatly.
【Cut Precise Holes Efficiently】Sandblasting passivation surface treatment and fully ground body process ensure more accurate and smooth drilling. Arcuate spiral groove provides excellent chip removal and heat removal. 120° split point prevents walking and makes drilling precise and faster.
【Wide Application】Perfect for drilling center holes with most lathe machines and power drills in Stainless Steel,Hardened Steel, Carbon Steel, Alloy Steel, Cast Iron, Aluminum, Copper, Wood and other hard metals.
【5 Sizes Fit All Needs】Includes 6pcs centering drill bits with 5 most commonly-used sizes, 1.0mm(*2), 2.0mm, 3.0mm, 4.0mm, 5.0mm. These lathe bits can be used for processing materials with diameters of 3/16''(5mm)~5"(130mm).
【90 Days Warranty & Storage】If you are not fully satisfied for any reason, please contact us for 100% refund or replacement. This drill bit set comes with a portable plastic case for easy storage and organization.