Material: These tablecloth clips are made of stainless steel, strong and durable, you can use them repeatedly, serve for a long time. stainless steel has built-in corrosion resistance, but it can corrode and rust under certain conditions, but not as quickly or severely as conventional steels. Note: Stainless steels corrode when exposed to harmful chemicals, salt solution, grease, moisture or heat for extended periods of time. Please clean the tablecloth clips promptly and dry them with a soft cloth, if exposed to toxic liquid. Convenience: Simple to use, easy to install, silver color is bright and beautiful Wide application: suitable for home, parties, picnics, restaurant, weddings, buffets, dinners, etc, keep the tablecloths from sliding off the tables even in the winds Size: Each tablecloth clip is approximately 7.5 x 7cm, for table top up to 5cm thick. The 4-pack napkin holders are perfect for picnic tables or dining tables.