The half bowl adapter allows a Systematic Series 5 tripod to be used with any 100mm diameter half ball fluid head (designed for video, but also widely chosen to support long telephoto lenses and spotting scopes). Compatible with all 100mm half ball video heads.\n\nThe adapter is fully compatible with Gitzo's new Systematic tripods, in particular with the safety catch feature of Gitzo's updated Systematic range, offering secure, accident-proof support, even during changeovers of centre components.