Each tap in berber furniture glide features 6 steel prongs that hangs on and won’t come off chair feet / furniture legs that are outdoors or indoors. Features a 1” round and ¼” thick weatherproof marine grade protector pad designed to last longer, withstand outdoor elements, and provide safe smooth chair sliding on all hard floor surfaces. Prevents furniture from damaging floor surfaces and safely protects all hard surfaces including wood decks, composite decks, tile, stamped / smooth concrete patios/porches, and more (For concrete pavers & rough concrete we recommend Slipstick Gorilla Outdoor Nylon Glides). Designed for wooded furniture legs 1 inch in diameter and larger, these weatherproof marine grade berber furniture sliders are perfect for chairs, bar stools, dinning / kitchen chairs and tables, wood decor and more. Includes 8 x 1” Round Gorilla Outdoor feet glides that install in seconds with the tap of a hammer, simply clean the bottom of furniture leg, position on furniture and then tap in.