Durable, professional construction: made from high-quality rubber and aluminium with a copper coating for long-lasting use. Built to withstand frequent use by hobbyists and professional glass cutters while remaining environmentally considerate. Adjustable circular cutting up to 40 cm: the tool’s adjustable arm lets you cut perfect circles with a maximum diameter of 40 cm, so you can handle a wide range of glass sizes without switching tools. Stable, accurate cutting mechanism: a suction cup holds the center point in place while a round button and cutting wheel rotate to score the glass. This keeps the cutter steady, reduces slippage, and produces cleaner, more consistent cuts. Easy-to-read scales for precise setup: clear, legible measurement marks on the lever make it simple to set the exact radius you need, improving accuracy and saving setup time. Why this tool solves common problems Eliminates wobble and misalignment: the suction-centre design and round guide improve stability compared with handheld circle cutters, reducing waste from out-of-round cuts. Speeds up repeatable work: adjustable arm and readable scales let you reproduce the same circle size quickly for batch projects. Fits both hobby and professional workflows: rugged materials and simple adjustments make it appropriate for craft work, small shop jobs, or professional glass installation tasks. Key specifications Materials: high-quality rubber and aluminium with copper coating Maximum cutting circle diameter: 40 cm Features: suction centre, round guide button, cutting wheel, readable scale on lever Intended users: hobby glass cutters and professional glass cutters Typical applications Craft and stained-glass projects: cut precise circular pieces for lamps, suncatchers, and decorative panels. Mirror and small tabletops: create round mirrors or glass inserts for furniture with a clean, accurate edge. Repair and shop use: quickly reproduce circular cuts for replacement parts or custom installations. What to expect Improved control and repeatability for circular cuts up to 40 cm. Durable construction that holds up in regular use. Simple, measurable setup for accurate results without guesswork.