ISS user guide
Always check that the stringer shaft, rubber O-ring and male and female thread parts are clean, dry and free from sand and other particles before insertion.
Insert the ISS key into the stringer keyhole and slowly push the stringer into the chamber until you feel firm resistance. Slow insertion will allow the air within the cavity to equalize. Fast insertion of the stringer can create pressure and burst the internal sleeve.
Turn the key clockwise to lock the stringer in place. The ISS key is made from a fiber-reinforced polymer and is designed to flex/ bend when full lock of the stringer is achieved. Over tightening past the lock point will damage and strip the thread.
Drill hole for leash plug minimum 5cm (2”) left or right of board vertical centerline only. Drilling too close to board vertical centerline will result in puncturing the ISS internal sleeve.
Insert the key into the slot and turn the key anticlockwise to unlock the stringer. After 5 full rotations gently pull the key upwards to remove the stringer.
Only use the correct size stringer for your board length: