?Perfect Size For All Types Of Straws?Our Straw Brush Set Has 2 Pieces Of Straw Brushes In 6Mm And 8Mm Diameter Sizes.Stanley Cup Accessories.The Sturdy And Flexible Cleaning Tool Can Easily Reach The Entire Inside Of The Straw And Pipe For A Thorough Cleaning. | | ?Sturdy Bristles And Bar?The Use Of High Quality Models And Strictly Controlled Processes Make Our Brushes And Poles So Strong That They Will Not Shed And Are Reusable For A Long Time Without Frequent Replacement | | ?Food Grade Material?The Bristles And Rod Are Made Of Food-Grade Silicone (The Inside Of The Rod Is Made Of Food-Grade Stainless Steel), So You Can Use Them With Confidence. The Brush Also Won'T Scratch All Your Cleaning Items, And The Ergonomic Handle Makes It Easy To Clean All Types Of Straws | | ?Applicability?The 6Mm And 8Mm Diameter Silicone Brushes Are Bendable So They Can Be Used To Clean All Types Of Your Straws Like Stanley Straw And Stanley Straw Cover, Kettle/Coffee Spouts, Nipples, Hummingb.