Features:* These replacements for rotary knives for quilting, sewing, arts or crafts, and the rotary knife blades can be used to cut fabric, fleece, felt, leather, card, paper and vinyl, you can easily cut 4 sheets of fabric and 8 sheets of paper.* Sturdy construction makes it not easy to break or deform, which can easily cut the fabric to make it the shape you want, durable to serve you for a long time.* Compatible with: these rotary knife blades are approx. 45mm diameter, which can work well with most 45mm rotary cutters.* Applicable Occasions: the complementary circular blades can be widely used in homes, offices, schools, shops, arts and crafts and other occasions, you can use them for storage for convenient and safe carrying.* Scale on the blade. Note:1. The blade is sharp, use it with caution and do not place it out of the reach of children.2. Put the cutting head away when not in use, then reopen it when in use.3. If it is not used for a long time after opening, you can drop some oil on the cutting head for maintenance, which can prolong the service life.4. Circular punching blades are consumables, and their service life will vary due to personal use habits and different cutting pads. Specifications:Product Name: Rotary KnivesMaterial: Stainless Steel Alloy ToolColor: SilverDiameter: 45mm Suitable for: Cutting Fabric, Fleece, Felt, Leather, Card, PaperQuantity: 10pcs/setPackage Contents:10 x Rotary KnivesNote:1. Transition: 1cm=10mm=0.39 inch.2. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.