uxcell 12 Pcs 1/8inch Shank 10mm Cup Brass Bristle Brush for Rotary Tool Product Name : Bristle Brush;Material : Metal, Brass;Fit for : Rotary Tool Shank Dia : 3mm ( 1/8inch);Shank Length : 35mm / 1.4" Brush CupDia : 10mm / 0.4";Brush Cup Length : 8mm / 0.3" Total Length : 50mm / 2";Color : Brass Tone, Silver Tone Weight : 62g;Package Content : 12 xBristleBrush forRotary Tool(Non-OEM)