I bought the crystal pipe brush clean tool to clean my somking pipes and I was very impressed by the results. The brush is flexible and can reach all the corners and curves of the pipe without scratching or damaging it. The bristles are soft and gentle, but also effective at removing any residue. The handle is ergonomic and comfortable to hold. The tool is easy to use and wash. I would recommend this product to anyone who wants to keep their pipes sparkling and hygienic.