The beams are 2X6 and while it may be possible to attach the pulley with the strap provided, I found it too challenging for this size beam and ended up using some chain instead (see picture). These little gems are just what I need. Not sure if Fitflop have changed main their main production base or something, but shoes I have ordered recently seem to be coming out much narrower than before with more pointed shape at the front. Im glad I double checked my order and realized the seller made a delivery mistake because I was straight trippin thinking I ordered these skyscraper platforms. Im 51", 166 lbs, shorter torso, hour glass figure, small breasts, BIG booty/hips (44. Very happy with these shoes. Now for what could be better. Very nice boots. Its so comfortable and great quality. Obtienes lo que pagas, es un buen producto, solo que es difícil de ensamblar ya que no tiene instrucciones escritas, solo vienen dibujos que no son claros, tuve que quitar varias piezas y recolocarlas porque las instrucciones no explican en qué sentido van las piezas y tampoco hay videos en dónde te expliquen cómo armarlo, fuera de eso se ve bien ya armado, es muy ligero y llegó muy rápido para ser de importación (1 semana), llegó completo, incluso trae piezas extra y sí caben bastantes zapatos.