The SKIL TOOL Roundover Router Bit Set includes three pieces designed for 1/4" collet routers. Made of metal, this set is suitable for cutting applications and is specifically designed for use with routers. The SKIL brand is known for quality and reliability, making this router bit set a trusted choice for DIY enthusiasts and professional woodworkers alike. The set includes a roundover router bit, a traditional router bit, and a bearing router bit, providing versatility and precision for a variety of woodworking projects.