... -resistant 1> Commodity: Adjustable School Desk and Chair 2> Model No.: JB-D039 3> Adjustable School Desk and Chair Specifications: 1. Desktop: 18mm or ... tang, never fall off, which can make desk stable, even at uneven places. Adjustable 6 steps Students can’t adjust ... installed on one side of desk,. It’s convenient for students to hang schoolbag, rubbish bag, umbrella and so on and saves space.