The length of the rochin is usually equivalent to the length of the forearm and can be found in many differing designs varying from spears to short swords and machete-style implements. In use, the techniques tend to be circular in order to avoid excessive contact with the shield. The short spear is predominantly used in an upward stabbing motion, piercing armor under the rib cage, armpits, and throat although dependent upon the type of Rochin used, slashing motions can also be employed.
The length of a rochin is typically equal to the forearm, and it can be found in various designs ranging from spears to short swords and machete-style tools. In practice, techniques are often circular to avoid excessive contact with shields. The short spear is primarily used for upward stabbing motions, aiming for areas like under the rib cage, armpits, and throat. However, depending on the type of rochin, slashing movements can also be employed.