Great for standard-height worksurfaces. They attach easily to Lorell Rectangular, Round and Kidney-shaped Activity Tabletops (sold separately) and adjust from 22 to 30 in high in 1 in increments. Each leg has a Silver Mist upper portion that is fixed onto the tabletop and a chrome lower insert that slides into the upper portion for easy height-adjustment. 10-year limited warranty. Package of 4. Silver.