Quarks are elementary particles and, as such, do not possess a size in the traditional sense. They are considered point-like particles, meaning they have no discernible size or structure. In the Standard Model of particle physics, quarks are considered fundamental particles, along with leptons and gauge bosons, and they are not believed to be composed of any smaller constituents. The concept of size becomes less meaningful when discussing elementary particles such as quarks. Instead, the properties of quarks, such as their mass and charge, are described by mathematical equations within the framework of particle physics.