Body wings
Your cello body wings can be removed and replaced by other wings of a different design (sold separately)
Each wing is attached by 2 locks (upper and lower) situated on the back side of the cello.
To replace your cello body wings you will need to use the key provided with your new wings set.
Replacing the cello body wings
Hold the wing with one hand then insert the key into the lower lock situated adjacent to the wing on
the cello's back side (Fig 7a).
Engage the key with the lock and turn it full one quarter of a rotation counterclockwise.
Repeat the same action on the upper lock of the same wing.
Page 25