Customer Service: Your satisfaction is our top priority. If you not completely satisfied with your straw cleaner brush,please contact us immediately, we will resolve your any question or problem into 24 hoursHow to Use: Simply insert it into the pipe, rotate it, remove and wash it. These cleaner brushes are easy to clean after use, washed with a little dish soap and warm water; Keep it in a dry place when you dont use it; You can reuse and reduce wasteEfficient Cleaning: Brush Family straw cleaner brush comes with 10-inch and 12-inch, Bendable to fit the shape of almost any straw and will wash the inner areas of silicone, glass, metal straws, gooseneck kettles, and other hard-to-reach corners, holesHigh Quality Materials: Our straw cleaner brush made of high Quality food grade 304 stainless steel and durable nylon bristles;End tip coating that can protective glass straws,does not scratch the inside.You can feel free to buy it with full confidenceMultiple Size: Straw cleaning brush set including 8 brushes with varying diameters of 6 mm, 8 mm, 10 mm, and 12 mm, making it easy to clean reusable drinking straws, and straws on Smoothie Tumbler, Sippy Cup, Baby Bottles, Yeti, Starbucks Cup and others