Dust Collection Y-Fitting by POWERTEC. This true "Y" type fitting acts as a dust collection splitter and is specifically designed to help you reduce down from a 6" port (or main line), down into 4 inches. Opposite of the 6 inch end, this tapered splitter features dual 4" hose lines - delivering a multi-functional tool that increases workflow, while effectively accommodating multiple hose feeds. Whether you're using this connector with your vacuum systems or portable workshop machines, it's designed to enhance your system's airflow and efficiency. It's also built to provide a secure and reliable connection to your ports. 6" Dust Collection Spice by POWERTEC. These handy dust collector accessories provide you with the ability to connect/join two sections of the standard 6" ID dust collection hose together. The splice fits inside two sections of 6" ID flexible dust control hose and attaches with two band clamps, thus creating a longer hose. They feature a simplistic and straightforward design, and are made out of abrasive resistant and highly durable ABS plastic to withstand the wear & tear commonly associated with woodworking and dust extraction. Although extremely easy to use, this dust collection fitting is highly versatile. With a little imagination, you can use them for an assortment of applications such as connecting: Two 6" dust hoses together/ Two sections of a 6" ID pipe/ 6" hose to 6" PVC drain pipe/ The possibilities are limitless!.