With this upgraded adjustable outhaul system for windsurfing, adjusting the outhaul has never been slicker while sailing. This adjustable outhaul system includes 2 clamcleat CL244 cleats to fit on the boom, 2 single Ronstan Series 15 block with ball bearings, 4mm Dyneema line with a polyseter lining for no stretch leading back to a 3mm Dyneema line to run through clew and blocks on the boom. Also includes a bungie cord to make adding or dumping the outhaul easier. The line and blacks here are top notch and won't need to be upgraded later on from a standard outhaul kit. If you race in the Techno 293 one design class, the RSX Olympic class, Kona, Formula, or Raceboard - you know that having a reliable adjustable outhaul can make the difference between winning and losing a race! Make sure you have the best gear so you can have your best race.