Our unique latex formulation and dip manufacturing process delivers radical modulus strength. The power curve increases as bands are stretched for optimum performance. Special anti-oxidants help protect against harmful U.V. rays, prolonging sling life. Wishbones are made of durable Spectra cord and provide superior strength, durability and silent operation. They feature a 9/16" outer diameter and are the standard band for more JBL spearguns than any other sling diameter. 200 Elite series bands are a great option for divers looking for an easier band pull on their Elite's.