Enhance your drilling projects with this premium set of Diamond Coated Hole Saw Drill Bits, crafted from advanced natural diamond material for superior cutting efficiency and durability. Each bit undergoes a special enhanced coagulation treatment through electroplating, resulting in neat, smooth suction holes with no broken edges, making them the ideal choice for precise construction and installation tasks. Key Features: · Premium Natural Diamond Material: Ensures exceptional hardness and long-lasting sharpness for efficient drilling through tough materials. · Enhanced Electroplated Coating: Provides smooth, neat suction holes and prevents edge breakage, improving overall durability and cutting performance. · Versatile Application: Perfect for drilling clean openings in glass, tiles, plastic sheeting, wood, and other materials, offering great flexibility for various projects. · Optimal Operating Speed: Designed for use with professional drills, electric drills, or bench drills at 800-1000 RPM, ensuring optimal performance. · Water Cooling Recommended: Adding water during drilling significantly extends the life of the drill bits by reducing heat and wear. · Wide Size Range: Includes 14 pieces with diameters of 3mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 18mm, 20mm, 30mm, 40mm, 50mm, 60mm, and 70mm to cover a variety of drilling needs. · High Quality & Brand New: Manufactured to meet high standards for reliable and efficient use in professional and DIY applications. Specifications: · Material: Natural Diamond Coated · Sizes Included: 3mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 18mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm · Recommended RPM: 800-1000 (with water cooling) Package Includes: · 14 x Diamond Coated Hole Saw Drill Bits For best results, ensure smooth drilling by avoiding lateral pressure, maintain adequate water cooling to prevent overheating, and always wear appropriate safety equipment during operation. This comprehensive drill bit set offers excellent versatility and durability, making it an essential addition to your toolkit for fast, precise hole cutting in a variety of materials.