4 Metal Base 3/4" Swivel Glides without Ferrule Color:Silver If they do not you

If they do not you can use the bracket as a template to mark and drill new holes

Ergonomically designed to support your head and neck this pillow allows you to get a more restful nap or sleep

Fits a 5/8" square outer diameter chair leg or tube with a 1

Size refers to inside diameter of tip

The screw size would depend on the frame hole size

4 Metal Base 3/4" Swivel Glides without Ferrule Color:Silver If they do not youSwivel glides decrease floor scratching and increase the mobility of your school furniture. The easy to install design allows for a large quantity (such as a class room full of desks) to be completed quickly. Equipping your furniture with swivel glides will allow for an easy restructuring of your classroom when the new school year begins and aid well when having to move furniture for floor cleaning purposes. Chair glides are very popular in schools