JUL Force Fit Eyelets, available in Gold Look and Nickel. 7/16" (1.5cm) inside diameter. Premium quality.

To set eyelets: Create a hole in the fabric the size of the eyelet opening. Place the eyelet half with the larger opening on the back side of the fabric. On the right side of the fabric, insert the eyelet with the smaller opening. Set in place by forcing the two halves together with a rubber mallet.