I needed something to stretch out the top of my tango shoes. The heel height is 3.5". The angle of this particular stretcher is not getting it and I will have to take the previous suggestions and file it into shape. Also, the metal nubs are a great idea, but not what I need for my shoe. It would be great if they were removable and could be attached as needed. A few adjustments and I will try it out on a test pair first.