The glass is fully ambidexterous.
I remember going over to my Riding Partners house once. He had his Bicycle up and a Stand and I could tell he was .......
I asked him What was Up?
He told me he was Trying to swap-out his Pedals. And that the Right Side pedal came off with No Problems. But he Couldn't for the Life of Him get the Left side one Off.
I just Smiled and said... "Maybe I can Show You a Little Trick that Might Help."
LOL