This router drill bit is a versatile and durable cutting tool that can be used with a router or a drill. It has an 40mm diameter cutting edge that can create smooth and precise holes or grooves in wood, metal, plastic, or other materials. The cutting height is 16mm, which means it can cut through thick or thin workpieces. The shank is also 8mm in diameter, which fits into most standard routers or drills. The router drill bit is made of high-quality steel and has a tungsten carbide tip that ensures long-lasting performance and resistance to wear and tear. The router drill bit is ideal for woodworking, carpentry, DIY projects, or professional applications.