Made of stainless steel material, it is and safe for use. The curtain clips with hooks, no burrs and smooth surface, will not damage or scratch fingers. These curtain clips can hold things tightly and they are not easy to break, useful and reliable for home use. Features - Color: Silver. - Material: Stainless steel. - Size: 3.50X1.90X1.00cm/1.38X0.75X0.39inch. - It is made of high grade and stainless steel material, which can be used for long time. - They also come in handy to hanging photo, pictures, handcrafts, multipurpose and practical. - Perfect for hanging curtain, just it on single drapery rod or double window curtain rod. - The workmanship of this product is perfect, simple to use, non-slip design, excellent and useful. - Small and compact size, useful and excellent, wide application, can hold different items. Package list: Curtain Clips with Hooks