Product review (5 stars): Simplifies the job
This is a better solution to making the 90 degree turn out of the back of your dryer.  In the past I have always just hooked the dryer exhaust hose up to the exhaust pipe that comes straight out the back of my machine, but this device just makes that whole process easier.  And it's better because you're less likely to crush the exhaust hose when you push the dryer back into position.  It's inexpensive and it does a nice job.