Official S.P/N.A Licensed Chibi Maruko-chan ちびまる子ちゃん Product.
Can set length up to 90cm. Pull the 2 heads at the same time, when you hear a sound of click, then this kind of length is set. After each gear position is fixed, pull it out a little and then hear a soft click to release the gear. Continue to stretch to change longer gears.