DescriptionThese brushes are made of high-quality materials and are safe to use. It is perfect for cleaning experimental test tubes. Simple design, easy to use. Suitable for cleaning the inner wall of test tube, which will bring much convenience to you.Features- Color:Beige.- Material: Bristles.- Size:30.00X7.00X7.00cm/ 11.79X2.75X2.75in. - Notes: Suitable for 250ml volumetric flasks. - These very practical universal brushes are used to clean most type of test tube.- The useful appearance design is suitable for cleaning the inner wall of the bottle and also for cleaning the bottom of the bottle.- They are made of premium quality materials and is safe to use, great and wonderful.- Hanging design, can be hung on the wall for easy storage, bring convenience to your daily life.- You will have good use experience because of the perfect workmanship of this product.