The Dagger is Aerotechs longboard racing sail. This model has been updated to 100% grid construction. With longboards making a huge comeback into the market, Aerotech has just the motor that these boards need. This sail features afull powerful shape with firm leech tension. Moderate sleeve width and camber inducers give it maximum range and speed. Construction: Other features include; roller bearing camber inducers, a thermo-formed base pad, a new raised stainless steel 6-1 pulley with oversized rollers, and an interactive rigging guide.