Fits Model(s) Fiskar Rotary Cutter, Martelli Cutter, Olfa Cutter, any standard 45mm cutter Material High Carbon Hitachi Steel Our premium 45mm rotary quilting blades crafted from high-grade Hitachi steel, designed to elevate your quilting experience to new heights. With razor-sharp precision and durability, these blades effortlessly glide through layers of fabric, ensuring clean, smooth cuts with every pass. Whether you're a seasoned quilter or just starting out, our blades promise reliability and longevity, making them an indispensable tool in your crafting arsenal. Upgrade your quilting game with blades that deliver unmatched performance and quality. * Made of: Steel * Use: Replacement Rotary Cutting Blade * Size: Inner Diameter - 0.315in, Outer Diameter - 1.758in, Thickness - 0.012in * Includes: 30 blades