General description This Round Glass Cutter is designed for both hobbyists and professional glass cutting enthusiasts. It features an adjustable compass design that allows for precise cutting of circles up to 40cm in diameter. Made from high-quality rubber and aluminum with plated copper, this tool is durable, eco-friendly, and easy to use. Technical specifications Material: Rubber and Aluminum with Plated Copper Suction Cup Diameter: Approx. 5.5cm / 2.2inch Lever Length: Approx. 20cm / 7.9inch Max Circle Cutting Diameter: Approx. 40cm / 15.7inch Package Weight: Approx. 130g Installation For first-time use, remove the glass from its frame and place it on cardboard before cutting. Avoid using the glass on a hard floor to prevent damage. Usage Utilize the clear scales on the lever for easy reading and accurate measurements. The round handle fits comfortably in your hand, allowing for precise control while cutting. Ideal for achieving perfectly round glass cuts.