• Lureimprover Original is an Angled Bowl-Shaped Disc of Silicone
  rubber with a Ball Bearing Swivel. It´s a fishing tackle from Sweden.
  

• Lureimprover Original can be used for both casting and trolling and
  makes unique and attractive movements for almost all kinds of
  fishing lures and baits.

              Weight: 3.5 g
              Diameter: 30 mm (1.18 inch)
              Material: Silicone rubber
              Swivel: Ball Bearing Swivel
              Colour: Transparent
              Storing: Rinse with clean, fresh water after use and hang to dry.
              Warning: Keep away from children.

You can vary the length of the leader (the fishing line) between the lure
and Lureimprover Original.

• A short leader makes quicker movements for Lureimprover Original
  and the fishing lure. A longer leader makes slower movements.

• A leader length of 0.3 - 1 meter (1.0 - 3.3 feet) is recommended
  for almost all fishing lures and baits.

You can slide the leader knot on the Swivel ring to create different angles
for Lureimprover Original. 

• By increasing the angle the Lureimprover Original will make longer
  and slower movements.

Use an extra Swivel on the leader if you use small lures. This Swivel will prevent the lure swimming sideways and rotating.