Works with 1-inch ball arms from Ikelite, Howshot, Ultralight, Nauticam, and others.

Old and new Ikelite 1-inch balls and clamps are interchangeable. For the best performance, Ikelite recommend combining like components within a single clamp (two balls with grooves, or two balls without grooves). Ball components with an o-ring groove should have an o-ring installed at all times.