With their felt-base tip, these Fusion Feltac insertion glides help protect your floors from scratches and damage cause by furniture legs. They are ideal for use on hardwood, laminate, tile, linoleum, and ceramic surfaces. The plastic guides have a round, straight design with a square base, making them easy to install into round tubular legs. The felt is fused to the glides for a durable, lasting design. They are 11/16" (17 mm) in diameter and the package contains 4 furniture glides.