The NEIKO 38-piece wire brush drill-attachments set gives you extra power and cleaning precision when you need to get rid of built-up grease, remove a bead-sealing area on oxidized aluminum rims, and more. Ideal for cleaning rust, corrosion, and dirt, these wire brush drill attachments are made from 3 different materials: stainless steel, brass, and nylon. Each small wire brush measures 4" long with a 2-inch brush and 2-inch shank.This kit comes with a 1/4-inch hex shank that mounts the brushes on a power drill or die grinder. The included quick-release 6-inch extension bar with a soft ergonomic handle also allows you to use the brushes by hand and helps you reach small, tight spaces.This set of brushes and tools includes 12 stainless-steel wire brush heads, 12 brass brushes, 12 nylon brushes, a 1/4-inch hex shank, and a 6-inch extension bar. The brushes include the following sizes for SAE: 5/16", 11/32", 13/32", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 23/32", and 3/4". The brushes include the following sizes for MM: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, and 19 mm. Our drill-brush set comes in a blow-molded hard plastic storage case for optimal organization.This set is ideal for industrial cleaning, home use, hobby or DIY projects, and use on the jobsite. When it comes to drill attachments and more, NEIKO has your back with our durable, dependable, and strong tools.