Product review (5 stars): a real problem if the vent pipe is not easy to access
One of the bet Amazon purchases I have made. this kit includes more than just a lint brush, it is a system, well thought out and very effective. Please read the instructions, they are well written and intended to make this an effective tool and avoid accidentally unscrewing the rods in the vent, a real problem if the vent pipe is not easy to access. Includes adapters for two size shop vacs, and provisions for many different situations and vent configuration  The rods are  extremely flexible and if you follow the directions, you can get a really stellar result. The bushes (they include a smaller one for the venting in the dryer and for cleaning inside the dryer as well) are made of very stiff plastic to avoid damaging some less durable dryer venting materials. We followed the instructions to remove the back plate of the dryer and found a lot more lint inside the metal cabinet, where the smaller brush worked well.  Well enough made for the homeowner to do maintenance periodically, probably not going to hold up to everyday use. But I don't thing it is intended for that.  But it is well made and designed.