The ideal roller cutting knife for childrens. Creative free-form cutting. Rolling Sharp will never hurt you fingers. It’s triangular grip offers the best ergonomics. No more spare blades ! The maintenance of Rolling Sharp Rotary Cutter The maintenance for Rolling Sharp blade is simple - occasionally add a drop of sewing machine oil to the blade. This keeps the blade lubricated. What inside when I purchase the Rolling Sharp Cutter Pen with free Cutting Mat ? Rolling Sharp Cutter Pen-With Grip Cutting Mat (free) , made of Melamine Film Instruction Sheet Packed in a Transparent Plastic pack. ✔ An Ideal present for family and friends. Read more Introduction to how to rotate and holding the Rolling Sharp Cutter Pen How to use Rolling Sharp Cutter Pen with Cutting Mat Make sure to have a hard board to work on. Hold the penholder vertically. Press down and cut. The triangular silicone grip can be rotated to the optimal grip position for both left and right hand. In order to cut objects effortlessly, it is essential to have a hard cutting board underneath. The harder the board is, the less pressure needed when cutting. We have included a cutting mat(free) made of melamine film in each Rolling Sharp Cutter Pen package. Since it requires some pressure pushing down when cutting with Rolling Sharp Cutter Pen, it is recommended to be used by children who are able to control the pressure and can understand the use of a cutter. Attention： Please use this product with the including cutting mat developed exclusively for Rolling Sharp Cutter Pen, or on a hard surface like ceramic, melamine, metal plates or tiles. Please avoid cutting (your and others') kneecaps, scalp, faces, and any bony body parts. And of course, please do not use Rolling Sharp Cutter Pen to attack others. Do not use on glass surfaces. Not suitable for children under 3 years old. Please keep out of reach of children under 3 years old. and, for adults and professional paper crafters, we would recommend that you use your regular tools. Rolling Sharp Cutter Pen is not suitable for precision cutting. This is a product designed for kids and people who are afraid of using regular cutters/knives. Rolling Sharp Cutter Pen - Blue Rolling Sharp Cutter Pen - Green Rolling Sharp Cutter Pen - Red