Description Searching of a chemicals bottle cleaning brush? Our cleaning brush set will be the best choice for you. Made of pig hair and iron material, durable enough for your long-term use. Practical and portable design, ensures its popularity. Features -Color:Assorted. -Material: Pig hair, iron. -Size S: About20.50X5.00X1.00cm/8.07X1.96X0.39in. -Size M: About25.50X5.50X1.00cm/10.03X2.16X0.39in. -Size L: About30.50X6.50X1.00cm/11.99X2.55X0.39in. - Using excellent pig hair bristle and iron materials, excellent workmanship, it is strong, safe and durable. -The iron handle is ergonomic designed and practical, which can relieve hand fatigue. -Reusable design, you can clean the laboratory bottle easily with this brush. -Proper hardness pig hair bristles make no harm to variety of surface and clean effectively. -Reusable and washable. There is no dead angle in the scrubbing, durable and practical to use. Package list: 2 x Large Flask Brushes 2 x Middle Flask Brushes 2 x Small Flask Brushes