uneven parallel bars
Women’s gymnastics apparatus made up of two horizontal bars of different heights for performing various acrobatic exercises.
guy cable 
Metal cable that is attached to the ground and stabilizes the tubes of an upright gymnastics apparatus.
top bar 
Wooden bar approximately 8 ft above the floor.
low bar 
Wooden bar approximately 5.2 ft above the floor.
adjusting tube 
Part of the upright into which the vertical tube attached to the horizontal bar slides in order to adjust the height.