My favorite items are reusable products that are also disposable. I tend to have bad luck with anything permanent. Nothing has proved that more true than contacts. When I was younger and started to wear contacts, optometrists only offered single permanent contacts. I can't count how many times one would drop on the floor or get torn handling the small lense from the contact case. Since then, disposable contacts have become available and has made my life much easier.
G-Flex brushes are the type of brushes that were made for people like me. It features a flexible, sturdy wand handle and replaceable brush heads that screw on and off. These brushes are excellent for internal cleaning of laparoscopic or rigid endoscopy devices with medium to large channels. Just like my contacts, the brush head of the G-Flex can be disposed of after so many uses.