Metal Glides for Boss Drafting Stool (set of 5) Low Profile Plastic Glides With Metal Stem Metal Stem Measures 7/8" Long by 3/8" in Diameter Overall Height is +/- 2.5" / Overall Width is +/- 2" Fits All Boss/Norstar Chairs and Drafting Stools Fits Many Other Manufacturers Chairs and Stools