Ten-pin bowling which govern the sport and have predominant influence over its rules. These two central bodies are based in the United Kingdom and the United States, but their influence and ascendant ruling are highly respected globally and are projected worldwide. Additionally, there is the World Tenpin Bowling Association (WTBA), a part of the WB organization, which governs the sport of tenpin bowling throughout the world of which is divided in three zones; the American Zone, Asian Zone and European Zone. In England, ten-pin bowling is sanctioned and governed by the BTBA (British Tenpin Bowling Association). The BTBA is devoted to the
Ten-pin bowling Track, DV8, Roto-Grip, Hammer, Circle Athletic, Columbia 300, Dyno-Thane, Fun Balls, Legends, MoRich, Robby, and Via Bowling. Specially designed shoe design and manufacture is also a significant enterprise that many companies have gotten involved in next to ball production. Some of the major shoe designers are Circle, Dexter, Etonic, and Linds. Individual stores that sell the merchandise made by these companies specifically for ten-pin bowlers are called pro shops. In the United States, bowling equipment sales totaled US$215 million in 1997 which is around the same figure as in 1996 when the Sporting Goods Manufacturers Association (SGMA) released their reports.