Item Type: Glass Circular Cutter Material: Carbide, Steel Fit Glass Thickness: 2-10mm Cutting Diameter Range: 6-40cm Notes: 1. Manual measuring, please allow 1-3mm error, thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.1The lever is made of clear cut scale which make easy to read. 26cm to 40cm adjustable cutting diameter meet your different cutting size. 3With powerful suction cup holds center while cutter head scribes the circle. 4This compass type glass cutter is designed for cutting glass in a exact round circle. 5Designed for cutting a wide range of glass thicknesses with excellent accuracy and smoothness, ensuring minimized glass breakage. Package included:1 x Glass Circular Cutter