GOOD MATERIAL - These cleaning tools are helical and made of high-density nylon and stainless steel. They are rust-proof, do not shed bristles, and are resistant to deformation. Includes a lightweight and compact aluminum carrying case for convenient storage and transport. MULTIPLE APPLICATIONS - The brushes and needles are designed to clean small orifices such as nozzles, pneumatic tools, air tools, camping stoves, and more. Suitable for use with auto motorcycles, ATVs, welders, tattoo devices, lawn equipment, snow blowers, and various power sports carburetor jets. FLEXIBLE DESIGN - Designed to reach tight and curved spaces that are difficult to clean. Made with high-density nylon bristles and stainless steel for durability, corrosion resistance, and excellent flexibility. Spiral bristle construction stays intact and effectively cleans the interior surfaces thoroughly. REUSABLE CLEANING TOOLS - This carburetor cleaning brush kit is durable and can be used multiple times. Constructed with high-quality stainless steel that resists rust and is easy to clean. We offer a replacement for any defective pin cleaners or wire cleaners. VARIED SIZES INCLUDED - Set includes 10 cleaning needles and 5 brushes. Overall length: 4.53 inches (115 mm). Brush diameters: 2mm, 3mm, 4mm, 5mm, 7mm. Needle diameters: 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm.