Ключевые слова: art, bicycle, bike, blue, bright, cassette, chain, chainwheel, circle, cog, cogwheel, color, colorful, contour, cycle, design, drive, equipment, gear, gearing, glowing, gradient, icon, illustration, iron, isolated, light, line, linear, lineart, machine, mechanical, metal, metallic, neon, outline, part, speed, sport, sprocket, steel, technology, tooth, transmission, vehicle, wheel,