This Fabric Circle Cutter is ideal for cutting perfect circles or semi-circles between 30mm and 330mm diameter. It can be used on fabrics such as cotton, polyester and more. Youll be able to work in metric or imperial measurements with this handy tool. It is lightweight and durable, and it comes with a premium stainless steel 18mm blade that will stay sharp for longer. Safety covers are included. This is the best way to cut perfect circles every time! It is designed for left-handed and right-handed users. Blade size: 18mmCuts circles between 30mm and 330mm Ideal for cutting cotton, polyester and moreMetric and imperial measurementsLightweight and durablePremium stainless steel bladeDesigned for left-handed and right-handed usersFabric Circle Cutter 18mm. self healing cutting mat