High-Quality Construction: Crafted from brass wire, these brushes are designed for and repeated use. The 12-inch long handle is flexible, allowing you to reach and effectively clean difficult areas. Each brush is coated with lubricating oil during production to prevent rust, which can be easily cleaned off with paint thinner before first use. Versatile Sizes and Design: This set includes 7 brushes with varying diameters (6mm/0.2inch, 8mm/0.3inch, 10mm/0.4inch, 14mm/0.55inch, 16mm/0.6inch, 20mm/0.7inch, 25mm/0.98inch) to accommodate different cleaning needs. The long handle features a hanging loop for easy storage and quick drying, preventing bacterial growth in damp environments. Multi-Use Applications: Beyond just cleaning bottles and tubes, these brushes are perfect for a variety of tasks including cleaning car parts, computer keyboards, coffee machines, and more. Their flexibility and bristles make them an essential tool for any cleaning job. Effective Cleaning Tool: The spiral design and stiff brass bristles are ideal for tackling tough grime and oil stains, especially in the kitchen. These brushes can also be used for polishing metal surfaces, ensuring your items not only clean but also maintain their shine. Safety and Care Instructions: While these brushes are highly effective, it is important to use them with care. Keep them out of reach of children and always wear protective goggles when using them to prevent any potential injury. Color: As Shown Material: Metal Package Contents: 7 x Brass Tube Brush(6/8/10/14/16/20/25mm) 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.