The of the pipe cleaning brush is designed to increase friction streaks, which is helpful for us to strengthen our cleaning and achieve better cleaning results. :The stainless steel tooth marks on the inner side have a strong hardness and a strong ability to remove rust. Packing quantity: you get is 12 pieces of pipe cleaning brushes, including a set of 1/2 inch, 3/4 inch, 1 inch; which can be applied to clean pipes of different sizes material: and thick poly handle, high strength, strong durability, long service life, can resist the abrasion, tearing, impact, and flattening of bristles, it can clean unfinished metal parts, and not affect the or fine features Reasonable combination: in order to adapt to more sizes, we have combined 3 sizes of cleaning brushes and sold together, so that you can deal with the situation that different sizes of pipes need to be cleaned at any time, and complete the cleaning work more effectively Practical design: there are cleaning teeth marks inside the copper tube brush, and are set on the contact with the hand, which can increase the direct friction between the hand and the cleaning brush during our use, which is convenient for applying better force and achieving better cleaning effect Wide range of uses: multi-functional manual rust removal tool for metal, can clean steel parts, machinery, unprocessed metal parts, paint stains, special without affect the or its nice characteristics, cleaning, polishing, paint removal/ Rust removal, welding tools are very easy to make the pipe shine again Colour:Red Material:PP+Metal Package Contents: 4 x Copper pipe cleaners (1/2 inch) 4 x Copper pipe cleaners (3/4 inch) 4 x Copper pipe cleaners (1 inch) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.