POWERTEC 70349 4 Inch to 2-1/2 Inch Reducer and 2-1/2 Inch Dust Control Flex Cuff with Stainless Steel Hose Clamps, Dust Collection Fitting for Woodworking Dust Collection Hose and Dust Ports, 1 Set

Well made for a basement 3D printed item. Works fine. Fair price. Filled a need perfectly, and I appreciate the ability to support other makers. Need: I do amateur digital electronics and solder at a bench in a home office a lot. I built a custom exhaust fan / vent setup using a home "grow" fan and shop vac 2.5" ducting. The fan and exhaust are 4". I exhaust everything out the window through a dryer fitting and baffle. The 2.5 ducting gives me velocity and 4" gives me the volume. It works well under my microscope / soldering stage.

Great product that works well. Fits over most dust collection ports.

I would rather the 4 inch side was slightly larger, rather than the same size as the pipe, so that it would simply fit over the pipe to just be banded down, but the flex cuff accomplished that task. I was just happy to find a product that accomplished what I needed, which was to vent toxic fumes from a 3-D printer to the outside through a dryer vent.

Works as expected.

fits my bandsaw perfect

Works great on several tools I have in my garage. Make connections easy.

Used to connect from my table saw to a dust collector and from another machine to another dust collector. The plastic and band clamps are well made and perfect for my work.

I have the DeWalt 735 planer and use a series of shop vacs for dust collection, but all the connection I purchased were the exact same size as what's on the planer, so I couldn't attach the hose to the planer. This device is a perfect fit OVER the planer dust port, fasten securely with hose clamps to both sides and saves me a lot of time in cleanup. It is flexible, but it's also short so the flexibility isn't a huge benefit. Still, great way to connect two hoses and even reducers to a dust port and probably good between with larger dust collection systems.

después de tres semanas de comprado, el sello de hule que hace el ajuste se está deshaciendo, muy mala calidad de material además de que esta membrana es muy delgada, no lo recomiendo, demasiado caro para comprar uno cada 3 semanas

Works as described. adapts 4" down to 2.5". clamps work good, doesnt feel cheap.

I really like these hose adapters. Having the quick release is a fantastic time saver. The only thing I wish was that the (already good) magnets were even slightly stronger, but I can swap these out at some point. Also, the hose clamps, I’ve since found I like the wire clamps for the hose that sit either side of the hose ribbing as opposed to the band clamps that squash the ribbing, but they still work just fine.

Muy buena calidad

Fits down to 1-1/2 fine. I used it on my 12" Dewalt Miter Saw No problem.