Chinook Universal type Joint. Replaces old broken or torn joints. Metric thread is compatible with almost 99% of thread bolts ever used. Only exception is old Windsurfing hawaii, circa 84-86.

We only recommend this type joint for recreational use. High performance or bigger sailors please use either rubber joint or Tendon joint.

MAKE SURE you use red thread locker on threads. Locktite 271 is an example. You don't want the bolts to come unscrewed while windsurfing.