Fiskars 45mm Contour Rotary Cutter (195210-1001). Fiskars Comfort Loop Rotary Cutter with a 45 mm blade makes cutting a wide variety of quilting materials comfortable and easy. A curved shape with loop handle provides a natural fit for your hand to improve comfort and control, and a versatile design provides excellent blade visibility for right- or left-handed users. It even includes a sliding button that extends the blade during use and retracts it for safe storage.