Billiard table manufacturers have produced convertible billiard tables (in the broad sense) that double as dining tables or as table tennis, foosball, or air hockey, tables, with removable hard tops. Home pool tables, which often lack a ball-return system, are commonly either 4 × 8 ft or 3.5 × 7 ft models, a medium between 3 × 6 ft. bar/pub tables and 4.5 × 9 ft tournament-size models. Low-end tables tend toward the smaller range, and may have MDF or wood beds as an alternative to slate; those with light-weight beds may be foldable for storage, as with table tennis. Miniature tables
Multiplying billiard balls third and fourth ball, all in the same hand. The magician will then vanish the balls, one at a time, until only one remains. Often, part of the routine involves the magician giving the impression that he is "passing" the balls through his body, in and out of his mouth, fingertips, and pockets. Sets of multiplying billiard balls are available from magicians' supply stores. The quality, size, material, and price of the balls can vary greatly and are dependent on the magician's personal taste. The balls are most frequently made of wood, plastic, or metal. From an article by Tom