With the 3/8" Barrel Bracket by Kirsch and the appropriate rod, you can install cafe curtains in a variety of types and sizes. Also commonly used to attach door panels.
1-1/4" Projection Lock-Seam Curtain Rod by Kirsch
Starts at $12.99
2" Projection Lock-Seam Curtain Rod by Kirsch
3" Projection Lock-Seam Curtain Rod by Kirsch
Starts at $14.99
4" Projection Lock-Seam Curtain Rod
Starts at $16.99