Feature: 1. Easy Installation: Our sewing rotary cutter blades can be installed on both sides of the rotary cutter, making them suitable for both right handed and left handed users. This versatile feature ensures ease of use for everyone, allowing all crafters to enjoy the benefits of seamless cutting. 2. 45mm Diameter: Featuring a 45mm diameter, these rotary cutter blades replacement are designed to tackle a wide range of cutting needs, including patchwork and leather crafting. Their optimal size allows for accurate and efficient cuts, accommodating various fabric thicknesses and materials. 3. Effortless Rolling Design: The innovative roller design of the rotary fabric cutter blades allows for easier cutting, improving cutting efficiency. Whether you're working with fabric, leather, or paper, the blades ensure slick, clean cuts without fraying or tearing. 4. Versatile Application: These replacement rotary blades are suitable for cutting various materials, including fabrics, paper, leather, felt. They are not only convenient compared to traditional scissors, but they also save you a significant amount of time, making them an essential tool for quilting, sewing, scrapbooking, card making, and other handcraft projects. 5. Excellent Alloy Steel Material: Crafted from excellent alloy steel materials, our rotary cutter blades are incisive and rugged, allowing for efficient cutting through multiple layers of fabric and other materials. This longevity ensures consistent performance, enhancing your crafting experience and making them a must have accessory for any innovative enthusiast. Specification: Item Type: Rotary Cutter Blades Material: Alloy Steel Diameter: Approx. 45mm / 1.77in. Package List: 10 x Rotary Cutter Blades 1 x Storage Box