BENEFITS of SOMOLUX ROTARY CUTTER BLADES 28mm The ideal cutting paper, fabric, leather, plastic, cloth, etc.For cutting at home, office, school, shop, especially the use of technology. How sharp is the blade? Be WARNED, very sharp! The pressure needed - or applied - is minimal to be able to cut through : Paper, Fabric, Cloth, Paper, Card, Leather, Quilting fabric, Scrap-booking, and all types of arts and craft type goods. Excellent Fabric Cutter Blades. Use Tips 1. Sharp knife, use caution, not to be out of reach of small children; 2. If the long-term not in use , please drop some of the oil in the cutter head , extended service life. 3. Round knife blade for consumables, due to personal use habits and different 4.A cutting mat is recommended to preserve the life of the blade. Furthermore, a metal ruler would be advisable for straight lines. Size&Package Thickness :0.3mm, Hole Diameter:5mm, Diameter: 28mm. 10* 28mm Rotary Cutters Replacement Blades