The Carbide 1-1/4" Roundover Router Bit 66646 is a high-quality power tool accessory designed for precision and efficiency in woodworking projects. This router bit is perfect for creating smooth and intricate round-over edges in various materials. The carbide construction ensures durability and long-lasting performance, making it a reliable tool for professional and DIY projects alike. The model number 66646 signifies the specific design of this router bit, catering to those who require a precise and reliable tool for their woodworking endeavors.