These high quality chair glides are a standard size that will fit many typical office chairs, stools, etc. This is a very simple way to make a rolling chair stationary. Just pull out the old chair wheels and insert the new chair glides. Metal stem length is 7/8" and stem width is 7/16". The bottom of the metal stem has a standard 1/8" thick shoulder. This offer includes a complete set of 5 chair glides. Specify a quantity of 1 for 1 set.. 2 for 2 sets.. etc. To help protect your floors, you can optionally purchase stick-on felt pads. Or to reduce chair movement, you can optionally purchase stick-on gripper pads. Satisfaction guaranteed, if product does not meet your needs, just return within 30 days for a refund (shipping is not refundable). If you have any questions, just call toll free. Click on the image below to view other angles and dimensions, you may need to temporarily allow pop-up windows.