IMPORTANT: The 1.42" glide is slightly smaller than the 1-1/2" inside diameter cup it is designed to fit into. This allows the foam to flex and conform on uneven surfaces, providing self-leveling stability American-made replacement outdoor chair leg protectors are designed to be installed inside wrought iron furniture feet cups with an approximate inside diameter of 1-1/2". See images for detailed information Manufactured from a slick, hard, long-lasting Delrin resin that easily outlasts thin plastic glides. Installation is quick and requires minimal effort compared to furniture feet that require force Protect your surfaces from scrapes and damage. These non-marking wrought iron furniture caps safeguard your deck, stone, concrete, and more, making them perfect for both indoor and outdoor use Package includes 24 patio furniture glides and 24 double-sided neoprene adhesive foam discs Forever Glides are revolutionary self-leveling replacement feet for wrought iron furniture. The replacement feet replace those missing plastic pop-in furniture inserts with glides that stay in place. Missing table and chair feet inserts can cause damage and scrapes to your surface. Forever Glides protects all your floor surfaces! Replace your old-fashioned pressure fit cup inserts with new high-grade Delrin material glides made for durability and last up to 10 times longer than conventional glides. Forever Glides are made in the USA.