Circle cutter adjustable from 40 to 300mm in diameter. It has a 10mm shaft diameter and can handle materials up to approximately 50mm thick, allowing it to be used with electric drills and drill presses. The blade rotates like a compass, enabling clean hole drilling. [Product Information] Size (40-300mm): Approximately 32.5cm (length) x 14cm (width) Weight (40-300mm): Approximately 395g Shaft Diameter: 10mm Maximum Cutting Thickness: Approximately 50mm Please refer to the size information to determine suitability. A convenient item recommended for DIY enthusiasts. Will be shipped without a box.