This tool is to be used freehand or with guides and templates for accuracy. Simply attach to a standard 4" or 4 1/2" grinder, this kit is for medium size sculpting projects. The SafeBlade technology means that there is limited cutting exposure on the perimeter of the blade, improving safety and reducing the risk of catching. The two carbide cutting teeth are hard wearing, can be rotated to expose the unused cutting sides and are also replaceable. This purchase includes: 1 Mini TURBO Blade, 1 Extension Adapter, 4 Assorted Grit Sanding Discs, 1 Torx Key, Assembly Parts.