Our folding chair tips fit all standard plastic folding chairs with 3/4" outside diameter (size of a dime) tubular feet. The cap installation is simple without requiring any glue. Just hammer it with a rubber mallet. These tips soften when placed briefly in boiling water and harden when they cool down, allowing for a super tight fit and extra durability. We recommend using a rubber mallet or hammer for installation, and if you encounter any issues, vegetable oil is an excellent lubricant to assist installation.