Sigalsub Tensioning Bolt is an anchor hook for roller spearguns

• Can hold a pair of bands with Dyneema wishbones.
• Sold as a single item that includes 1 x stainless steel threaded screw and 2 x Derlin lugs that make up the anchor. 
• Used to pretension and anchor your rubbers.
• Designed to withstand the pressure of a roller gun setup.
• It can be used to convert your speargun to a roller gun.
• Size: Stainless Screw/Axle: 54 mm long x 5 mm diameter.
• Cupped base to delrin buttons, to suit round barrels.
• Machined groove in delrin button for line retention.