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 302 stainless wire and provide superior strength and durability. 100 series bands are the thickest offered by JBL Spearguns. They feature a 11/16" outer diameter and deliver enough intertia that one band is all you need. They're a great option for divers looking to get more power and speed out of their speargun.