The ProMediaGear TRB75 Pro-Stix 75mm to 100mm Bowl Adapter allows you to use 75mm ball heads or half ball heads with your Pro-Stix tripods and Gitzo Series 5 Tripods. Level up your experience with the 42-Series Carbon Fiber Tripods by using this bowl adapter. With this, you now have a platform for your leveling head. This makes it easier to level your camera and take better shots. The leveling ball is a great addition to any capable tripod and will allow for quick, small, finite adjustments on the fly without having to adjust the legs. This adapter is manufactured out of high-strength aluminum and finished with a satin black anodized for better abrasion and optimal durability.