DescriptionThese cutting blades are made from strong high steel for durability, high hardness, fast and precision cutting. They offer durable long service life and ensure straight, accurate cutting. These cutting blades are quite and mainly used on copper, aluminum, alloy and other medium hard thin metal material. They can also be used for non-metallic materials such as plastic, wood, and ceramics. Features- Color: As shown.- Size: Outer dia: 54.8mm/2.2inch; Inner dia: 11.1mm/0.4inch.- Material: High steel.- Made of professional high steel, super hardness wear resistance and durable long service life.- blades with good fracture resistance ensure fast and fluent cutting, improving work efficiency.- Black can cut metals such as aluminum, copper and plastic, yellow one is for wood, and silver one is for ceramics and tiles.- Inner bore diameter is 11.1mm and it will fit for many electric machines.- Widely used on marble cutting machines, electric hand saws, sliding table saws, rotary tool, etc.1 x 3PCS 54.8MM Mini Circular HSS TCT Cutting Rotary Tool for Concrete Cement Wood