Was just looking, there are too many! (I use google to search BF) could not find the one that I had read which had a bunch of good info. What I remember reading was there were various sizes available but they all extended a decent amount (maybe too much) There are also pedals that have integrated extensions/longer geometry. "Kneesavers" if I remember correctly is OG and lots of generic knock-offs. I would Google "pedal extensions bikeforums.net" and dig through some threads.