Ideal for Carbon Parabolic Rails and for strengthening the tail area for back foot pressures. Custom made for surfboard production and suitable for all surfboards, Retro’s and Long boards.Carbon/Kevlar tapes are used on surfboards rails, to create a unique flex pattern used by various surfboard manufactures. The carbon or Kevlar creates superior strength that acts as a frame which maximizes speed drive whilst creating a flex memory that flows with the wave.