Hello, Thank you for asking. They are machine cleaning brushes and that little tip is small but mighty! Use it gently and it will grab huge amounts of lint, dust and threads from all kinds of crevices in your machine. If you have any other questions please let me know. Molly Here is a link for purchase: www.sewandsewsplace.com/shop/c/p/Sewing-Machine-Cleaning-Brushes-x62158246.htm
Hello, I apologize I am just seeing your message. I checked my bottle and there is no weight listed on it. It only says sewing machine oil. Many companies make this product. It is very lightweight and clear. I hope that helps.
