With this adhesive curtain holder there is no need to drill the wall to fix a curtain, just use an heavy duty double sided adhesive tape on back of it.
Clear and, if necessary, sand the surface where the holder will be fixed to ensure a good fixation.
This no drill adhesive curtain rod rolder is designed for a 1" rod, they are sold as a set of two.
Also buy the rod end caps here at Shapeways:
http://shpws.me/Q9zl