The spare glides are suitable for both the Ant as well as Series 7 chairs by Fritz Hansen, as both chairs have the same frame. They protect the chair and its legs as well as the ground underneath the chair. Furthermore, the plastic glides reduce the noise that can be made when the chair is moved.
The plastic glides can easily be plugged on under the chair frame’s legs. The glides are available individually so you don’t have to change all of the ones on your chair, instead replacing just the ones you need to.