10Pcs SDS Plus Concrete Drill Bit Set – Carbide-Tipped Masonry Bits (1/8", 1/4" x2, 5/16", 3/8", 1/2") – Double Thread Copper-Plated Drill Bits for Concrete, Brick, Stone, Granite & Marble

• High Quality & Durability: Made from 40Cr material with YG8C alloy tips, it offers good strength, toughness, excellent hardness, and wear resistance; This makes it suitable for various drilling needs and ensuring long-lasting, efficient working experience
• Double-thread Drill Bit: This design offers faster cutting and efficient material removal, boosting drilling speed; It ensures stability, reduces vibration, improves accuracy and quality, and prevents chip blockage for smooth and efficient operation
• SDS Plus Shank: Compatible with most rotary hammers for quick drill bit changes, its secure design prevents loosening from vibrations, ensuring safer and smoother operation
• Clear Size Markings: The drill bits shank features 5 drill bit diameters (ranging from 1/8” to 1/2”), making it easy to select the right bit for your needs; It also includes 2 lengths: 6.3 inches and 4.3 inches, accommodating various working requirements
• Plastic Storage Tube: The included plastic tube is compact, space-saving, portable, and durable; Its threaded design allows for easy opening and closing, and the top features a hanging loop for convenient storage, reducing the chance of misplacement