Detailed Product Description

1) Gear system and bead chain works in a good state: operate swimmingly with small voice.
2) Whorl twine spool: the twine can be rolled regularly, bland can be up and down reposefully.
3) Gear system with spring device, blind can be stopped at any position.
4)If there is two blinds unfold less than 90ο, can be use one connector to work.
5) If use the durable twine (one kind of twine which we can provide), life-span of this product can be extended properly.