>>720390012
Wands are just a way to canalize and focus the magical energies that a wizard's soul is capable of bringing forth
And on that regard, it seems you can also use other stuff as catalysts, like how mad-eye moody used a staff instead of a wand
The wizards that use just their hands are actually using their fingers as the catalysts
Sure, wands have special properties that can better focus or even improve the strength of a spell, that's why most wizards prefer them, thought that depends mostly on the material they are made of