Eric, I enjoy the videos you post very much. They are so informative. I have a question for you but I don't know how to contact you, other than this comment section. I ordered your set of brushes months ago and was very excited when it arrived. I am a teacher, so I put the box away until school ended. Today, I finally opened the box only to discover that the #18 mop brush has a very loose ferrule. It's so loose that I'm afraid it might even fall off the handle. I'm aware that a company manufacurred these brushes, not you, but I need the contact information of this company. Can you please post this information. Thank you.