Green Eel The Green Eel is a Trek 3 series 3500 with a frame size of 21”, that means Large. It’s a great fit for someone between about 5’8″ and 6’4″. It has V-Brakes and Shimano Tourney derraileurs. V-brakes Tourney SSR saddle Crowbar Trek Alum. Fork Shimano Tourney Size 21” – 53.5cm 3 Series Front suspension Trek 3500 26” Bontrager wheels and tires Trek 3500