Scratch Brush Pen Set, Pen Style Prep Sanding Brush With Steel, Brass, Fiberglass, Nylon Replacement Tips for Jewelry, Watch, Coin Cleaning, Electronic Applications, Auto Body Work

【4 Pcs scratch pen set】the scratch pen set includes 4 scratch brush pens in different material nibs, meet the cleaning and sanding needs of various scenarios, 【How to use】twist the end of the sanding brush pen to reach the desired length of bristles and stiffness as needed; It is recommended to turn it out to a length of about 5mm to make it more handy to use, 【Multi-functional cleaning pen】the scratch brush pens can be applied in many applications, the pen style brush is good for tight places, electronic applications, removing rust and corrosion; The nylon and fiberglass brushes are soft and elastic., 【Size and material】each corrosion pen is 4.5 inch long; The 4 types of brush heads are made of steel wire, brass wire, fiber bristle and nylon bristle, the bristles are compact and serviceable, 【Insulated scratch pen】the corrosion cleaning pen is insulated, feel safe to cleaning your battery operated devices