The Wolfcraft 6948200 Mitre box with adjustable 100mm blade is an adjustable tool to help with precise, straight and angled cutting for a wide range of materials, such as wood, plastic and metal. It is built using a roll-off system that consists of an adjustable blade, a measuring scale and base plate guides. The adjustable blade is made of durable steel with a V-shape, which locks into the base plate guides and helps to ensure the accuracy of your cuts. Furthermore, the blade can be adjusted to suit the desired cutting angle. The Mitre box also includes a measuring scale, which is situated on the side of the base plate. This allows for accurate material measurements without having to use a ruler. Finally, the box also contains a backer board, which helps keep the material in place for maximum cutting precision.