Key Ring Design: The flexible brushes come with a detachable key ring for quick and easy access.With this key ring, you don't need to worry about losing them.All cleaning brushes have a convenient loop at the end of the handle The bottle cleaner brush can be hung up neatly separate or together on the attached split ring .High Quality Bottle Brushes : The bottle brushes are made of stainless steel and durable food grade nylon bristles,which are not easy to fall.The cleaning brush has sturdy bristles, and the cleaning effect is excellent.The bristles of the pipe cleaner are strong enough to remove debris, soft enough to not scratch .Different Size: There are many size options for this cleaning brush.the smaller goes into very small grooves or holes.the bigger into bottles and glass.We provide a package of 10 nylon bottle cleaning brushes with different diameters to meet different place cleaning needs: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, and 25 mm, and overall length of all brushes are 20 cm. .Wide Application: This pipe cleaners are widely used at life,it can be used as coffee machine cleaning brushes,kettle brush,pipe brush,airbrushes, small Bottles, Cell Phones, Colanders,Drinking Straws, Eye Glasses, etc. .Effective Cleaning: Simply insert it into the pipe, rotate it, remove and wash it.With the long, soft but durable bristles, it can be used to clean each size of pipe you have and does not scratch the inside of straws.Moreover, it doesnt leave a lot of fluff behind in the pipe which you need to take the trouble to get rid of it. .