Oak Street makes specific feet for their chairs that we can get you. If you would like to order those please call sales at 888-388-6372.
This chair is 1 in (L) x 1 in (W) x 9/16 in (H).
The most common hole size that the ECI2525 fit into are in the range of 3/4" to 1".
The overall dimensions of this Chair Glide is 1-inch L by 1-inch W by 9/16-inch H. They will fits chair legs with an inside diameter between 3/4-inch to 1-inch.
The largest inside diameter that these Chair Glides will fit is 1 inch by 1 inch.