Trolley rod diameter: about 2.5-3.2cm( 0.98-1.26inch )
Stall on the beam of the baby stroller, can let them watch cartoon and listen to music.
The baby will feel very happy while admire the scenery and listening to
music.
Convenient and practical to use and easy to install !
It also can be used by mother.

It is a definitely GOOD CHOICE for you and your baby !