1" thick laminate/particle board tops, PVC edge banding and a metal base. The base is designed with a metal modesty panel with an integral cable trough and includes 4 locking casters for easy mobility. Table tops can be connected using 2 ganging clips that are included with each table. Access grommet keep cables neat and organized. Grommet Opening is 3" Diameter and the Interior is 2-1/4" Diameter., Lot of 1