Material - The cutting wheel is made of durable metal + tungsten alloy. Made with a cutting range of 2mm to 15mm. Design - Heavy duty metal anti-slip lightweight handle, oil feed pencil style, carbide tip, industrial grade design, ergonomic handle design, comfortable to hold, labor-saving long use. Glass Cutter Head - It can rotate 360 degrees, use oil dropper, add kerosene into the glass cutting tool, make the cutter head smoother and sharper. Safer to break the glass, gently press, easily separate the glass Round Metal Knocking Head - Used to knock the glass after cutting or put under the glass scratches and split the glass. Widely Use - This glass cutter can be applied to glass, mirrors, tiles, diamonds and minerals. Mini size, easy to carry, making it an ideal tool for housework and cutting work.