Although it is T ball we're playing, they still require a face guard.
Face Guard kit comes with a face protector, 3 screws and clips.
You don't need a screw driver. The screw is inserted on the inside of the helmet and the clip rotates around on the outside until it becomes snug.
The side clips should sit so that the opening faces to the front if the helmet. The top clip opening should face to the back of the helmet.
Snap the the middle space of the guard into the clip. Use your muscles because it's a bit tough to do! Snap sides in first then the top.