Dust Collector Vacuum Hose Adapter: This trio of mix-and-match adapters is used to connect hoses of varying diameters to each other or to a range of Dust Right port tools. Use singly or combine sets of two in various combinations for broad compatibility you won’t find anywhere else. Attach Most of the Hoses: The fast and flexible saw dust extractor multi-colored ports are free of sticky residue which lets you connect hoses up to 4” in diameter to tool parts as small as 1-1/4” plus a wide range of sizes in between. Both ends are clearly inscribed with compatible hose/fittings or OD dimensions. Features: Our dust collector fitting adapter set has 3 interchangeable adapters that can be combined in 5 different ways for connecting dust hoses and tools to dust collection. This shop vacuum port adapter set reduces 4” hose/handle to 3” OD, 2-1/2” OD/2-1/4” ID, 2-1/4” OD/2” ID, and 1-1/2” OD/1-1/4” ID. Durable Construction: The 4 inch dust collection hose adapter set is made from glass-reinforced polypropylene material and is durable enough to collect the workshop dust. A versatile dust right fittings set to allow for dust collection in a number of tools with various dust ports. Includes: Our dust right dust collector connectors port set includes (1) Black (large) Dust Port Adapter, (1) Gray (Medium) Dust Port Adapter, and (1) Blue (Small) Dust Port Adapter. When not using these dust collection fittings, simply stack them all for convenient, compact storage. Rockler Woodworking Dust Right Stacking Dust Port Adapter Set (3-Piece): Our dust collector port adapter set provides a better way to attach those hoses, than duct tape. The flexible sticky-free stacking dust collection systems for woodworking connect the hose adapters to suck the dust. --- Specifications: The Rockler Dust Right table saw dust collector Port Adapter Set weighs 0.500000 – Material: Glass-reinforced polypropylene – Black Adapter: One end fits a 4” hose or dust right 4” quick change handle (sold separately) on one end, and another end has a 3” OD – Grey Adapter: One end fits into a large adapter, another end has 2-1/2” OD and 2-1/4” ID – Blue Adapter: One end has 2-1/4” OD and 2” ID port and another end has 1-1/2” OD and 1-1/4” ID. The blue adapter mounts either way to both black and gray adapters to step down from 4” hose to 2-½” hose. These dust collection accessories friction fit together for easy assembly or disassembly. --- 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.