Zinc Metal curtain hooks, sold in packs of 10.
Also sold individually in store
Note:
Metal hooks do not get brittle with time due to heat and UV in sunlight like the plastic ones, so you will not end up replacing them anywhere near so often. As well as helping to remove plasticd from out environment.
Zink Metal Curtain Hook (Pack of 10,20 or 50)
£1.20Price