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 a built-in resistance to corrosion, but it can rust and corrode under certain conditions, but not as quickly or severely as conventional steels. Note: Stainless steels will corrode when exposed to harmful chemicals, saline, grease, moisture, or heat for extended periods. Please clean the tablecloth clips promptly with Wipe the tablecloth 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 tablecloths non-slip even in winds Size: Each tablecloth clip is about 5 x 4cm, for table top up to 3cm thick. 8 pack napkin holders are perfect for picnic tables or dining room tables.