Complex sentence: However, the "nagasa" most commonly fits the profile of a tachi or katana blade, which would be a blade of more than 2 shaku (30.30 cm, roughly 2 feet) in length.
Split into simpler sentences: However, the "nagasa" most commonly fits the profile of a tachi or katana blade. Which would be a blade of more than 2 shaku (30.30 cm, roughly 2 feet) in length.