Please measure your chairs ball end before placing an order. For sale I have a set of 4 Replacement Chair Glides. The chairs ball end should measure 7/16”. The glides are 3D printed in PETG plastic and they will fit Eames Eiffel style chairs. Replace broken glides or customize with colors. Please message with questions. Thank you! Install Instructions: Place Glides on the floor. One Glide at a time, place the chairs ball end on top of the Glide. Slowly apply downward pressure on the chair until the ball end is inserted into the Glide.