All legs come standard with simple-adjust glides with optional casters. 16 gauge steel frame apron and 14 gauge legs make this table virtually indestructible. The 11 gauge steel tabletop support tabs and corner brackets fuse as one with 4 heavy-duty tamper-free Loctite hex screws. The (12 gauge) leg-base is fastened to the tabletop with 4 heavy-duty screws which gets inserted into the frame using a strong welded hangar bolt.