The kama; . It is the traditional farming sickle, and considered the hardest to learn due to the inherent danger in practising with such a weapon. The point at which the blade and handle join in the traditional model normally has a nook with which a bo can be trapped, although this join proved to be a weak point in the design, and modern day examples tend to have a shorter handle with a blade that begins following the line of the handle and then bends, though to a lesser degree than the difference in orientation of the traditional model; this form of the kama is known as the natagama