uxcell 12x 1/8inch Shank 5mm Pen Brass Bristle Brush for Dremel Rotary Tool UXCELL (U excel !) is the sole authorized Seller of uxcell products Product Name : Bristle Brush;Material : Metal, Brass;Shank Dia : 3mm ( 1/8inch);Shank Length : 30mm / 1.2" Brush Pen Dia : 5mm / 0.2";Brush Cup Length : 10mm / 0.4" Total Length : 50mm / 2";Color : Gold Tone, Silver Tone Weight : 37g;Package Content : 12 xBristle Brush for Dremel Rotary Tool(Non-OEM)