This bit has a cutting diameter of 18mm and a cutting length of 20mm. Perfect for making dado grooves and all types of straight cut work. 1/4 shank. Highlights: - Route dados and straight cuts for joinery and general use - Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge - For use on CNC, table mount and handheld routers - Silver induction brazing for maximum strength and durability - Manufactured with anti-kickback design to help prevent workshop mishaps Item Includes: 1 Router Bit Straight router bits are the most widely used and versatile bits in woodworking. They are ideal for joinery such as box joints, lap joints, dados, rabbets, mortises and tenons. You can also use straight bits for trimming operations and CNC work. With metric cutting dimensions, these router bits offer exact sizing and fit for international standards, making them particularly useful for projects requiring precise dimensions or when working with metric-based systems. Whether used in woodworking, cabinetry, or DIY projects, straight router bits with metric cutting dimensions enhance efficiency and accuracy, ensuring high-quality results.