Material: These tablecloth clips are made of stainless steel and are sturdy. They will not rust. You can use them multiple times and keep them for a long time. Stainless steel is naturally resistant to corrosion, but it can rust under certain conditions, but not as quickly or as severely as conventional steel. Note: Stainless steel will corrode when exposed to harmful chemicals, saline, grease, moisture, or heat for an extended period of time. Please clean the tablecloth clips promptly and dry them with a soft cloth if exposed to toxic liquid. Convenient: Simple to use and install, their silver color is bright and elegant. Widely Used: Suitable for home, parties, picnics, restaurants, weddings, buffets, dinners, etc. Prevents tablecloths from slipping, even in windy conditions. Dimensions: Each tablecloth clip measures approximately 5 x 4 cm, for tabletops up to 3 cm thick. The set of 8 napkin holders is perfect for picnic or dining room tables.