Feature:1. The knife edge is of sharpness and the blade has no burrs, which makes the cutting surface beautiful and smooth.2. A reasonable cutting angle increases the performance of the blade to a certain extent, and also increases the service life of the blade.3. 45mm rotating blade can cut six layers of fabric at a time, saving you valuable time4. Made of high quality material, durable and long service life5. Suitable for cutting paper, wallpaper, vinyl film, fabrics, textiles, leather, etc.Specification:Item Type: Roller Wheel Round Knife BladeMaterial: SKS-7Blade Diameter: Approx. 45mm / 1.8inMounting Hole Diameter: Approx. 8mm / 0.3inBlade Thickness: Approx. 0.3mm / 0.01inUses: Cutting paper, wallpaper, vinyl film, fabrics, textiles, leather, etc. .Package List:10 x BladesNote:Safe to use, be careful