1PCS 3D/5D/7D/10D Internal Cooling Carbide Bit Non-Standard Diameter 20-25.9mm HD Crown Drill Twist Rod Blade(20-20.9mm,8)

Crown Drill Twist Rod Blade==========High-concerned chemical : NoneOrigin : Mainland ChinaDIY Supplies : MetalworkingMaterial : Tungsten SteelType : Twist Drill BitOrigin : Mainland ChinaDIY Supplies : MetalworkingMaterial : tungsten steelType : Twist Drill Bit

• Made of fine grain carbide with high hardness and wear resistance, ensuring sharp cutting, long service life, and stable performance for heavy-duty machining.
• Features 3D/5D/7D/10D flute length with internal cooling holes, effectively reducing heat buildup, improving chip removal, and extending tool life during high-speed drilling.
• Complete non-standard diameter range from 20mm to25.9mm, meeting special processing requirements that standard drills cannot satisfy, widely used in industrial machining.
• HD crown design with high-precision twist drill flute provides fast and smooth cutting, high centering accuracy, and stable drilling for metal, steel, and alloy materials.
• Suitable for CNC machining centers, lathes, and drilling machines. for processing steel, stainless steel, cast iron, alloy, and other metal materials in automotive, and machinery industries.