Profoto adapter for ad400pro flash head - clearance The AD400 PRO Profoto adapter ring enables you to mount Profoto fitting modifiers directly onto your AD400 Pro Battery-Powered Portable strobe. This adapter attaches to your AD400 Pro via 4x small screws which are screwed onto your AD400 pro with a small Allen key. This adapter will make the CITI400 Pro compatible with a wide range of Profoto fitting modifiers that are currently available on the market. GBP 15.75 1