Aluminum alloy construction: made from a robust aluminum alloy for durability and wear resistance, a reliable tool for woodworking enthusiasts. Quick-disassembly design: an innovative quick-disassembly feature allows easy mounting or dismounting of components as needed, increasing convenience and efficiency during projects. Compatible with routers: designed to be mounted on a trim router; serves as an effective groove milling holder for precise circle cutting in a variety of woodworking applications. Optional models available: choose between regular and extended models to fit your needs and project requirements, offering flexibility for different tasks. Use scenarios: - Milling precise circular grooves or cutouts in wood panels or boards - Creating circle-based grooves on furniture components or cabinetry - Quick setup for repeatable groove tasks across multiple pieces