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Product Details
✓【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.