Features 1、4Pcs in 1 Set: Including 4pcs cutting heads, often used in automatic glass cutting machines to replace old or broken cutter heads. 2、Tungsten Steel Wheel: The blade wheel is made of hard tungsten steel material, with high hardness and not easy to crack. 3、High Carbon Steel Gasket: With widened and thickened high carbon steel gasket, has good stability and safer operation. 4、Alloy Cutter Shaft: Bold alloy cutter shaft is firm and strong, rolling smoothly, and more flexible when cutting glass. 5、Standard Production: With reasonable size and standard manufacturing, the cutter wheel is easy to replace and install. Specification Item Type: Glass Cutter Head Product Material: Tungsten steel + high carbon steel Product Quantity: 4pcs Product Height: Approx. 21mm / 0.8in Product Diameter: Approx. 4mm / 0.2in Cutter Wheel Angle 145° 155° Cutting Thickness Approx.4-6mm / 0.16-0.24in Approx.6-12mm / 0.2-0.5in Package List 4 x Cutter Head