Specification Packing: 1PC Material: plastic + wire wool Color: red Length: 195mm (7.68in) Width: 38mm (1.5in) Height: 25(1in) Feature The brushes have two holes and brush heads at both ends. The two holes in the middle can be used to clean the outer diameter of the pipe. The brush heads at both ends can also be used to derust the inner diameter and clean each other between the brushes. High strength, durability and long service life, can clean unfinished metal parts without damaging the surface The flushable range is the most common size: 12 inch, 58 inch, 34 inch and 78 inch tubes It has wearresistant, tearresistant, impactresistant and corrosionresistant properties, while preventing the bristles from flattening Multifunctional manual rust removal tool for metal, can clean steel parts, machinery, unprocessed metal parts, paint stains, etc. It is mostly used for cleaning various batteries and rust removal of pipelines.