Review on Hiware Drinking Straw Cleaner Brush Kit: 9-Piece Extra Long Pipe Cleaners - Perfect for Tumbler, Sippy Cup, Bottle, and Tube Cleaning by Tina Campanita

Works great; Ideal for cleaning straws or pipettes. Soft bristles that should not scratch. Various sizes (3) and many brushes (total 9). I like that the ends are capped with a soft rubber tip. I use these brushes to clean 5ml glass drops and they work great. Delivery took almost a week instead of 2 days, but that's the fault of the US Postal Service and the unfortunate coincidence of the holiday weekend. Seller maintained excellent communication and follow up. I would recommend these brushes and buy them again.