Scratch Brush Pen Set, for Jewelry, Watch, Electronic Applications

4 scratch brush pens in different material nibs, each brush comes with a replacement tip, meet the cleaning and sanding needs of various scenariosHow 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 useMulti-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, good to cleaning your jewelry, watch and coinsSize 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 serviceableInsulated scratch pen: the corrosion cleaning pen is insulated, feel safe to cleaning your battery operated devicesColour: as shownMaterial: brassPackage Contents:4 x Scratch Brush Pen4 x replacement brush headsOnly the above package content, other products are not included.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.