This Pencil Polishing Brush set is a valuable addition to your rotary tools collection, offering a convenient solution for polishing and finishing tasks. Crafted from durable stainless steel, these brushes are suitable for various applications, including aerospace, automotive, and metal fabrication industries. The 5mm wheel brush diameter and 40mm shank length provide versatility for different tasks, while the 3.17mm shank diameter ensures compatibility with a range of rotary tools. Effortlessly polish and finish projects with this brand new Pencil Polishing Brush set. Perfect for a wide range of industries, these stainless steel brushes offer durability and efficiency. Add this must-have tool to your collection today!