Ideal For Machining And Auto Repair Includes: 12 x Stainless Steel Brushes 12 x Brass Brushes 12 x Nylon Brushes Brushes are 4" long (2" brush, 2" shank) with a 1/4" Hex Shank 1 x 5-3/4" Quick Release Soft Grip Handle 1 x 6" Quick Release Extension Bar 1 x Storage Case Common Uses: Opening Clogged EGR Ports Polishing Corroded Light Sockets Cleaning Battery Terminal Clamps Removing the Bead Sealing Area of Oxidized Aluminum Rims Scouring Cylinder Head Volt Holes