Wands are small wooden rods made of wood. Some known woods include holly, hawthorn, oak, vine, willow, ash, mahogany, elder and yew. They always have a core of either Veela Hair, Dragon Heartstrings, a Pheonix Feather or Thestral Hair. Another important factor is the length. One example is Harry Potter's wand which is a holly, phoenix feather and 11 inch.thestral hair wands are very rare hermiones wand is vinewood and dragon heartstring 14 inchs