Ever try to find a layback seat post in 13/16" for an old Schwinn? All I could find were 7/8" posts and they were too tall. I finally just built a couple. I would call it more of an offset seat post than a layback seat post. This gets the seat way back at the rear tire. I was worried that the flat bar extension piece would bend over time so I gave it a stiffening break. Time to road test it.