ITEM NAME:Bottle Cleaning Brush Set Nylon Wire Small Brushes For Beakers Test Tubes Description: Made of abrasive wire and stainless steel shank, durable and non- rusting Sturdy and rinse out easily, easy handling and efficient cleaning tool Suitable hardness bristles are not too soft nor too hard, won`t scratch your tubes Perfect for home, kitchen and chemical laboratory cleaning, can effortlessly clean hard to reach spaces Fits for window frame, small bottle, straws, test tubes, valve guides, water pumps, etc. Specification: Material: Abrasive Nylon Wire Color: As Picture Shown Overall Length: 20cm / 7.87inch Outer Diameters: 2mm, 3mm, 5mm, 6mm, 8mm, 12mm, 16mm, 20mm, 24mm. Package Includes: 1 Set of 10pcs Pipe Cleaning Brush Note: Please allow 1-3mm error due to manual measurement, make sure you do not mind before you.Made of abrasive wire and stainless steel shank, durable and non- rusting. 1 Set of 10pcs Pipe Cleaning Brush. Suitable hardness bristles are not too soft nor too hard, won`t scratch your tubes. Material: Abrasive Nylon Wire.