Creating a smooth rounded edge along the perimeter of the hoof wall is essential for maintaining durable hoof shape and the healthy function of the 'Mustang Roll.' The Radius Rasps have a concave form specially designed to remove wall horn in an arc. This action makes the task of rounding the wall edge easier, faster, and more precise than when using rasps that create flat surfaces. Because it can be used one-handed, the other hand is freed to hold and steady the hoof while rasping. Hoof care professionals and horse owners alike will find this tool indispensable. Radius Rasps have have powerful magnets in the handle to attach them to your hoof stand, horse trailer, or other steel surface and both have replaceable stainless steel blades that will not rust.