The AK Interactive Real Colors Markers: Wheels Set (SKU: RCM102) is a specialized 3-pack of high-coverage acrylic paint markers designed for scale modelers to efficiently finish tires, rims, undercarriages, and rubber track pads. 
Like the rest of the Real Colors marker series, these pens feature a 0.3mm rigid fine felt tip for absolute precision. 
This specialized point prevents the paint from pooling or overflowing the rims onto the rubber tire section (and vice versa).