Features Durable Construction: Made from high-quality materials, this glass cutting tool ensures longevity and dependable performance for all your cutting projects Adjustable Design: The round knob allows for precise adjustments, while the suction cup securely holds the center, enabling accurate scribing of circles up to 60cm in diameter Easy-to-Read Scales: The lever features clear-cut scales, making it simple to measure and adjust settings for precise and consistent cuts every time Comfortable Grip: The compass-style design includes a round knob handle that fits comfortably in your hand, providing a secure grip for enhanced control during use Versatile Applications: Ideal for glass drawing circles, lampblack machine installations, and air conditioning chimney openings, this tool meets a variety of cutting needs 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 thickn: 3~12mm Diameter: 20cm/7.9in, 40cm/15.7in, 60cm/23.6in, 80cm/31.5in (Optional) Package List: 1 x Glass Cutter Package List