Features and Sturdy: Crafted from high-quality material, ensuring long-lasting durability and sturdiness for reliable cutting performance. Adjustable Glass Cutting: The round knob and suction cup hold the center firmly while the cutter wheel scribes circles, providing and adjustable glass cutting capabilities. Clear-Cut Scales: The lever features clear-cut scales, making it easy to read and ensuring accurate measurements for cutting results. Comfortable Design: Compasses style with a round knob handle designed to fit comfortably in your hand, allowing for smooth and controlled cutting motions. Versatile Applications: Suitable for a wide range of applications including glass drawing circles, lampblack machines, air conditioning chimney openings, and more, offering versatile cutting solutions for various projects. Features: 1、Made of material, and sturdy to use. 2、Adjustable glass circle cutter, round knob, suction cup holds center while the cutter wheel scribes circles. 3、The lever has clear-cut scales which make easy to read. 4、Compasses style, comes with round knob handle that fits your hand. 5、Suitable for glass drawing circle, lampblack machine, air conditioning chimney opening, etc. Specification: Features: Made of material, and sturdy to use. Adjustable glass circle cutter, round knob, suction cup holds center while the cutter wheel scribes circles. The lever has clear-cut scales which make easy to read. Compasses style, comes with round knob handle that fits your hand. Suitable for glass drawing circle, lampblack machine, air conditioning chimney opening, etc. Specification: Cutting thickness: 3~12mm Diameter: 20cm/7.9in, 40cm/15.7in, 60cm/23.6in, 80cm/31.5in (Optional) Package List: 1 x Glass Cutter Package List