Product review (5 stars): WOW it really is a great cleaner
when you open the box and get to the square shaped all white box make sure when you open it to look for the little allen wrench with two small screws. they are used to keep the brush head attached to the rod.  The rods are flexible to let you guide the brush through an L shaped bend. The longer brush is great for cleaning out the dryer vent where your lint catcher is. After using it the first time I went right over the neighbors home to ask him to come over to my house for him to actually see how well this kit cleans out the dryer vent. Wash is done one day a week. but at his home he is doing laundry on a daily basis, two adults three kids. Offered for him to borrow it when he has the time to clean his own dryer vents out. He was also shocked / impressed at how well it works. Just remember to read the little paper work which is attached to the bag that hols the rods. = KEEP the drill in clockwise spinning mode. ATTACH the bigger brush and use the little screw with allen wrench to tighten it onto rod. IF you do not take the time to attach the brush correctly it could come free from the rods while in the vent tube and then you will have to take your time to get the brush head out. Also the paper has info that you could use duct tape where the rods attach to one another to make sure the rods do not unattach from each other. For me I just kept the drill in clockwise rotation and had to problems. The spinning brush really does a great job at moving the lint off the dryer vent tube. I did two passes through the tube, a third time seemed unnecessary as I could clearly look into the vent tube and see with my own eyes that the tube was very much free from lint. Just move the rods far enough to reach the end then bring the rods all the way out, it will spin and push the lint out both ways, to the out side of your home and then back to the inside of your home. you have to clean a little lint off the floor but way better than having the risk of a fire start form having it stay in the vent tube itself. this vent really makes dryer vent cleaning easy, both in a job well done and in a time saving manner.