Ideal for schools, competitive play or just family fun, our set features an institutional-quality design that includes a ground sleeve, 2 3/8" galvanized pole, TP20 inflation pump, and STMB tetherball. Tachikara's Super Soft tetherball is manufactured with a special rubber composition cover designed to provide a unique "soft touch" resulting in an enjoyable "no-sting" game. The nylon rope is anchored to a recessed metal post in the ball, and has a metal clip attached to the end for easy installation.