Complex sentence: American screenplays are printed single-sided on three-hole-punched using the standard American letter sized (8.5 x 11 inch) and held together with two brass brads in the top and bottom hole.
Split into simpler sentences: American screenplays are printed single-sided on three-hole-punched paper using the standard American letter sized (8.5 x 11 inch). They are then held together with two brass brads in the top and bottom hole.