Simply assemble the central 3-piece steel pole, unfold the tripod base, stake the center into the ground, insert the included ground anchor stakes, attach the tetherball and you're ready for a playground favorite. This outdoor tetherball set's central pole has a 1.62" diameter that increases its stability, so you can count on it to keep the soft-touch ball and 8mm nylon tether in uninterrupted motion. Well, until another player steps in. A hand pump is included with this Park & Sun Portable Tetherball Set. It's designed for use on grassy areas and is ideal for installing in your backyard, school, child care center and more.