The raw material for the base of the stopper is protogenic nylon, whereas for the pin is protogenic polyethillenium. These two materials are important in the sense that the thread will not get ruined during screwing and tightening.
The raw material is a special protogenic nylon that can bear any curtain weight due to the rigidity of the particular material. In addition, its hook encircles the safety pin and stabilizes it.
The raw material is special protogenic polythillenium. The special sleekness of the particular material makes the plastic accessories slide softly along the curtain rods.
The raw material for the caster is special protogenic polythilenium, whereas for the safety pin is protogenic nylon.