<p>How sharp is the blade? </p> <p>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.</p> <p></p> <p>Use Tips</p> <p>1. Sharp knife, use caution, not to be out of reach of small children;</p> <p>2. If the long-term not in use, please drop some of the oil in the cutter head,</p> <p>extended service life.</p> <p>3. Round knife blade for consumables, due to personal use habits and different</p> <p>4. A cutting mat is recommended to preserve the life of the blade. Furthermore, a metal ruler would be advisable for straight lines.</p> <p></p> <p>Size:</p> <p>Thickness: 0.3mm,</p> <p>Hole Diameter:8mm,</p> <p>Diameter: 28mm.</p> <p></p> <p>Package Included:</p> <p>10* 28mm Rotary Cutters Replacement Blades</p> <p>      </p>