SizeThe inner diameter 1-1/8 inches (28mm), the outer diameter of the base is approximately 2-1/4 inches (57mm), and the height 1.58 inches (40mm). Durable MaterialShower Chair Replacement Feet are made of high quality rubber material, antislip, wear resistant. Widely UsedUniversal compatibility fits most bathroom benches, shower chairs. Makes the shower chair nonslip and stable. Easy InstallationQuick and easy replacement of old chair feet caps, easily installed and ready to use in minutes. With HoleThe wider tip features a convenient drainage hole to help dispose of excess water and prevent slipping. Package Includes: 8Shower Chair Rubber FeetReplacement Note: Please allow slightly errors due to manual measurement and different monitors.