Excellent of Knives -- This hand-held tool has a 360-degree rotating blade which enables you to cut very complex shapes easily and quickly. Keep Safe -- Unlike other craft cutter the blade will not readily cut human skin in normal use and it is therefore very suitable for use in schools for younger craft and hobby enthusiasts. Model Making -- It will enable you to cut complex shapes out of vinyl covering materials to create your own decals and roundels. Applications Include -- Paper-cutting decoupage stencil-making planner stickers artwork graphic design architecture scrapbooking sign writing using vinyl and many other uses. How to Replace the Replacement Head -- Use small tweezers to hold the rotating blade and pull it out to replace the blade. If the rotating blade is relatively strong you can use tweezers to clamp the blade and then rotate it and pull it out so you can easily replace the rotating blades of other angles. Note: If you want to cut harder materials you can lock the blades so that it is easier to cut. Of course if you are a professional artist you don_____ have to worry about cutting skills.