POWERTEC 70149-P2 4 Inch Dust Control Flex Cuff with Steel Hose Clamps, Hose Connector Rubber Cuff Coupler for Woodworking Dust Collection Fittings, Dust Collector Accessories & Machinery, 2 pack

The cuffs grip well on my dust collector and are able to handle the weight of a couple accessories hanging on it without additional support. Overall I'm happy with them, the fact that they're cheaper than what I could find locally is a bonus.

Used these in conjunction with the Powertec Elbow to connect my 4 inch dust collector hose to my Dewalt planer out of the way from lumber on the outfieed table.

LONG STORY SHORT: Simple, Good Quality, Works as intended. No complaints. Not much more too it than that lol. As you can see, the unit on my Jointer has the blue "hand twist" hose clamps. I honestly cant remember why one has the hand twist clamps and the other has the screw twist ones. I think I took the hand twist ones off another item all together just for initial convenience. But I don't ever remove this, so I would have been fine with the screw twist ones. CONS: -They only sent me 1 initially. I thought I had ordered the wrong thing, but I simply did an exchange, and only sent one back. No harm no foul, just something to keep an eye on.

Clamps are 7mm instead of 8mm thinner band. Just cheap but the rubber is good. Stipped one clamp.made it useless. There's better gear clamps is what I'm saying. I'm buying it again and again lol

I am disappointed with how cheap the hose clamps are. I just threw them away, but you can't really find this size of fernco elsewhere.