NEEWER SFR2 Square Head Adapter Ring This adapter uses magnets to attach lighting accessories. Made of silicone. Compatible with NEEWER square heads Z760, NW760, and NW635Ⅱ. However, it's loose on the TT560. When attached to Godox square heads, TT600 and AD200 speedlight heads, it fit without any problems. The "ears" were too large, so they have been cut down with custom modifications. Will be shipped via Yu-Packet Mini, sandwiched between cardboard without bubble wrap.