POWERTEC 70149 Dust Control Flex Cuff with Hose Clamps, 4-Inch
The POWERTEC Dust Control Flex Cuff with Hose Clamps, 4-Inch, delivers an airtight connection from one dust-collection fitting to another of comparable size, while eliminating the need for flimsy duct tape connections or other permanent fasteners. Firm yet pliable rubber construction allows enough flexibility to bridge slight diameter differences in hose or tubing. Pre-molded indents on the cuff allows for easy, airtight clamp installation. Handy set includes one rubber cuff and two steel hose clamps.

POWERTEC 70105 4" Elbow Dust Hose Connector, Black, 4", 90 Degree Elbow
The POWERTEC 4-Inch Elbow Dust Hose Connector facilitates directional changes in your dust collector hose network to maximize the system efficiency and effectiveness. This handy fitting has a multitude of applications; for example, when running a hose to an overhead mainline, altering the plane (up, down, left or right) of your hose, or as an adjunct fitting - coupled with the 4-Inch Y-Dust Hose Connector - to enable the expansion of your dust hose network. With its airtight friction grip, this durable connector will ensure that potent dust and debris is extracted sucked straight into your dust collector, and that clear, clean air is returned into your workshop environment. Make it perfect with POWERTEC fittings - streamlined, simple to use, versatile! Both 4-inch nominal ends measure 3-61/64-Inch O.D. and 3-3/4-Inch I.D.
The POWERTEC 4-Inch elbows facilitate the dustwork direction changes.