The speargun elastic rubber band is made of natural latex for superior performance and to ensure long-lasting use. The top-quality latex is provided by an industry leader and the most sought-after rubber world. The elastic band features a threaded connection to be assembled with a wishbone (sold separately). The Circular Band is the original equipment of the popular Apache speargun. Outer diameter: 13 mm | 1/2 in. The Circular Band is designed in Italy by Cressi and made in Mexico. Cressi has been an Italian brand pioneer in freediving, spearfishing, and scuba diving equipment since 1946.