Set of 2. Hidden cutting blade protects hands and fingers. Fits in the palm of your hand and is easy to use. Works on vinyl, paper, wallpaper or other thin material. Gently push or pull the safety cutter in a straight line to cut. Each blade can be turned so all 4 edges are used until dull. Use caution when turning the blade. Replace with standard double sided blade (4.3cm x 2.2cm)