Felt glide suitable for sled based chairs,
Ideal for timber floors and smooth surfaces
For best measurement results please measure the tube circumference using a soft tape measure or piece of ribbon and then click here to find out the diameter of glide you need.
http://www.onlineconversion.com/circlesolve.htm ( simply type the circumference in the box and click solve others. It will then show you the diameter). the diameter is equivalent to these sizes