But the Sai's are like daggers... sort of. They're more like the top end of a trident used in those sea fairy tales. Quoting what Sais are:
Sai- (pronounced sigh) The sai was developed for planting rice or vegetable seeds. It resembles a trident and has central, rounded or octagonal shaped steel blade approximately 16 inches long. On either side of the blade there are two prongs that are wrist guards. Sais can be used for a number of things such as stabbing, slashing, punching, blocking, and even throwing. It is believed that farmers who used the sai would carry three at a time. One sai for each hand and one was kept in the belt to throw if necessary. Legend states a strap of some sort was occasionally tied to the handle so the farmer could retrieve it.