Comprehensive Dual-Material Collection: This set includes four sizes (3/8, 1/2, 3/4, 7/8) crafted from both 304 stainless steel and brass, providing a total of 8 brushes. Each brush is equipped with a 1/4" hex shank, ensuring seamless compatibility with drills, grinders, and impact drivers for versatile use. Advanced Deep-Cleaning Capability: Designed with twisted wire tips that flexibly access narrow spaces, these brushes are perfect for tackling rust, paint, and on surfaces without causing damage. Ideal for detailed cleaning in automotive, metal fabrication, and tool restoration projects. Exceptional Industrial Strength: Constructed for durability, the 304 stainless steel brushes withstand and the rigors of high-speed operation. Brass wires offer a softer cleaning alternative, ideal for materials like copper and aluminum, ensuring thorough cleaning without harming the . Optimal Design for Work: Each brush measures 5 inches in total length, balancing reach and control perfectly for angled and detailed cleaning tasks. Choose the right size and material for the job-stainless steel for robust cleaning and brass for gentle, precise polishing. Versatile Tool for Multiple Applications: Essential for any workshop, garage, or DIY enthusiast's toolkit, these brushes help clean engine parts, prepare surfaces for welding, restore old tools, and metal fixtures. Compact and easy to store, they are a must-have for efficient and effective cleaning. Color: Picture Color Material: Metal Package Contents: 8* Pipeline brush 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.