I'm very pleased with this sturdy 2"OD x 1 3/8"ID hose. 12' is a good length and keeps the noise of the vac away. It is crush and collapse proof but that also means that it is a little stiff when attaching to power tools. 2 1/4" end fits fine into shop vacs and the rotating cuff end is 1 1/2" ID and 1 3/4" OD and slightly elastic. I plan to use 1 1/2" PVC and brass drain parts for custom connections to my tools. The included claw and long nozzle are well made and I just might have to buy the floor attachment, too.