1.5-inch, Set of 30, Black - Metal Curtain Rings with Clips and Eyelets – TEJATAN (Also Known as Rings with Curtain Clips/Curtain Clip Rings/Curtain Rings with Clips/Drapery Clip Rings) : Amazon.co.uk: Home
Amazon Basics 2.54-cm Curtain Clip Ring, Set of 7, Black : Amazon.co.uk: Home & Kitchen
SYRLIG black, Curtain ring with clip and hook, 38 mm - IKEA
30mm Curtain Rings with Aligator Pinch Clips Pack of 10 – Homeelabador
30mm Curtain Rings with Aligator Pinch Clips Pack of 10 – Homeelabador