The Bokken is a wooden based sword styled weapon used in First Year. Dansei Students are given these weapons upon them passing their weapon exam, which states weapon is best for them. The Bokken has no special nor primary skills, though all Bokken will have a special fuuinjutsu placed upon them to keep the students from trying to enhance their Bokken with elemental chakra. If enhanced with elemental chakra the Bokken will explode.
The Bokken comes in various styles which can be seen below.
Daito or tachi (katana-sized), long sword.
Shoto or kodachi or wakizashi bo, short sword, (wakizashi-sized).
Tanto bo (tanto-sized).