ITEM NAME:Rotary Tool Pen Shape 5mm Stainless Steel Wire Brush 20pcs X1P3 Rotary Tool Pen Shape 5mm Stainless Steel Wire Brush 20pcs X1P3 Great for cleaning dust, dirt, grime in hard to reach spots on jewelry and other fine articles. Ideal for removing rust or corrosions from any metal surfaces. Perfect accessories for jewelers, locksmiths, technicians, coin collectors, archeologist, students, hobbyists etc. Material: Steel Wire, Metal Product Name: Polishing Brush Brush Size: 9 x 5mm/ 0.35inch x 0.2inch(L*D) Color: Silver Gray Overall Size: Total Length: 50mm/ 2inch Shank Size: 3mm/ 0.12inch Weight: 61g Package Content: 20pcs x Polishing Brush Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Perfect accessories for jewelers, locksmiths, technicians, coin collectors, archeologist, students, hobbyists etc.