Two blue hilted swords.
Balanced: reduce two weapon fighting penalty by 2
Keen Edge: double critical threat range
These Twin Dao have blue hilts and have blades made of Silver. The twin dao is both a single weapon and a set of two weapons. Both are masterwork, and fit into the same scabbard as though they were a single sword. Twin dao must be used as a set; attempting to use a single twin dao as a normal dao gives a -4 penalty to attack rolls due to the strange balance the swords have. A twin dao may, however, be used as a single sword when held together. All feats that apply to normal dao (such as Weapon Focus) also apply to twin dao, whether used as a single sword or when used as a set.
When used as a pair, one in each hand, however, the twin dao show their true colours. They are perfectly balanced for wielding in two hands; while they are one-handed weapons, they can be used as if they were light for the purposes of two-weapon fighting, but only when paired together. Additionally, the wielder may add their full strength bonus to damage to both dao as if wielding them in their primary hand.