ToolUSA 2 Pc 5/8" Nylon Cup Brush Polishing Set On 1/8" Shank: TJ04-04384-Z02 : ( Pack of 2 Sets ) Includes 3 Packs Of 2 Piece Set Length of Bristles : 5/8" Pre Mounted Overall Length: 1.5"; Dia 1/8" Compatible With Rotary Tools