The jbl 200 series sling band delivers powerful performance you can rely on for every shot. A special latex formulation is dip manufactured to increase modulus strength, meaning the power curve of this speargun band increases as it’ s stretched, giving a powerful punch when you pull the trigger. This 16†long model fits jbl spearguns such as the 38 special in metal or wood as well as the northwest and many others. Jbl 200 series 9/16 x 16 spear band features: 9/16†exterior diameter is the standard band weight for most jbl spearguns 16†length fits jbl northwest and 38 special (metal or wood) spearguns and many others 302 stainless wire wishbones for improved strength unique latex formula and dip manufacturing process creates enhanced modulus strength power curve increases as bands are stretched, delivering maximum power every shot anti-oxidant coating prevents material breakdown from uv rays