Compatible with Brunge Processing, Straight Bit; Blade Material: Micro Tungsten Carbide (Microtungsten carbide); Brand: digram; The shaft part has the brand name and optimum speed of processing are specified. The blade is fully attached to the tip of the bit, so it can be brunge processing (digging down) and the blade has an angled angle for smooth processing. This is the most basic router bit, and there are many ways to use it, such as a groove hole, large loading, and many other uses. It has many uses. It is convenient to use as many sizes as possible. Depending on the thickness and size of the top plate you are processing, it is a good idea to use the size of the bit. "Perfect for groove processing that glides miter gauges, etc." The size is written in the picture, and the inch dimensions have been changed to millimeters, so there may be slight errors. Since these bits are often used, you want to collect various sizes. The shaft light of the router bit is 0.5 inches (12.0 mm), so please do not make a mistake.