Features: Circular Glass Cutter is made of high quality aluminum alloy material, with high hardness and sharpness cutting Compasses Glass Cutter, with good suction to keep center while the cutter head will scribe exact round circle. Polishing metal lever, clear cut scale easy to read. You can uncover the cover of the bottle, then pour some oil or lubricating into it. The circle cutter is designed for both hobbyists and professional glass cutter. Perfect for cutting glass work, craft work and household uses. Specifications: Component:Iron Type:1.25/1.5 1.25:Approx.14.5cm/5.71inch 1.5:Approx.24cm/9.45inch Package Includes: 1Pc Glass Circular Cutter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.