Cobalt Center Drill Bit Set for Metal, Metric Sizes 1.0-5.0MM

About this item

• 【Premium Quality】M35 high speed cobalt (5% cobalt) steel, coated with AlCrN, gives our center drill a greater hardness, resistance to wear, heat and toughness. The curved root of the drill drastically reduces the risk of breakage.
• 【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. 118° 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.
• 【Portable & Convenient】Our chamfering tools come with a portable case and CNC-machined lining for easy transport and Storage. Say goodbye to lost bits and restless searching for the right tool.
• 【5 Sizes Fit All Needs】Includes 7pcs centering drill bits with 7 most commonly-used sizes, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm, 5.0mm. These lathe bits can be used for processing materials with diameters of 3/16''(5mm)~5"(130mm).