Nito ryu requires 2 swords as we all know (Ni = 2 ; to = sword/katana)
I will briefly set an overview here regarding the distinctive shinai used in nito.
According to the regulations for shiai, those shinai must obtain the following measurements
Daito
max. 114 cm
min. 440 gr.(M) / 400 gr.(W)
Shoto
max. 62 cm
280-300 gr.(M) / 250-280 gr.(W)
This of course are the regulations for official shiai!
Lets have a look how they compare to a regular shinai:
