The earliest spears found in Japan were named hoko yari, and were clearly modelled on Chinese spears. They have a hollow slot in contrast to the most common Japanese yari spears which

Shuko are special knuckle dusters used as a tool in climbing, and can be used as a weapon in emergencies. Shuko are made of two bands joined by a leather strap: one crosses the palm and the other the wrist.

Jutte literally means ‛ten hands’. The number 10 is written in a cross and refers to the small hook characteristic of jutte. Alternatively, it could refer to the jutte giving the bearer the power of ten thousand hands.