The new Sequoia 3 table leg system has a Upgraded base and leg for superior stability with a Twist Lock collar which tightens the leg to floor base for secure fit. While being easy to install an additional inner structural element transfers load from the leg to the floor base reducing wobble. Floor bases are surface mount with a cap to fill void when leg is removed.Size: The 2? diameter anodised aluminium legs are 27? long making it 710mm from floor to underside of table. Floor bases are surface mount so (NO NEED TO DRILL A HOLE IN THE FLOOR!!)