Dust Right Dust Control System Coupler: Upgrade your woodworking dust collection system with the Rockler 4” mountable dust coupler. With a 4” diameter, it's a perfect fit for tools that use 4'' dust hoses, making connection and disconnection quick and hassle-free. The dust collector fittings allow you to mount it wherever you need it – on your workbench, wall, cabinet, or even a backer board on the wall, providing easy access to your dust collection system. One of the standout features of these woodworking workshop tools is the stepped design, which accommodates both 4” dust hoses and the Dust Right 4'' quick change handle (sold separately), giving you flexibility in configuring your dust collection setup. Whether you want to connect hoses for longer dust runs or create a stationary coupler for efficient tool-to-tool dust management, this dust collectors vacuum coupler has you covered. These 4in dust collection fittings are crafted from durable and robust ABS plastic, the dust coupler is built to withstand the demands of a busy workshop. It's designed for long-lasting performance, ensuring it remains a reliable part of your dust collection system for years to come --- Specifications: Compatible Hose: 4” - Compatible Handle: 4” Quick Change Handle (#55027, sold separately) - Material: Reinforced ABS plastic --- About Us: The history of Rockler Woodworking and Hardware goes back to 1954, when Norton Rockler started the Minnesota Woodworkers Supply Company in north Minneapolis. It was a small mail-order business with a big aspiration – to become woodworkers' go-to resource for everything they need to complete their projects.