The HoneyGrids P16RFW 25deg. Grid (White) is specially designed for the Profoto Softlight Reflector Ringflash (#100642). It comes with aluminum standoffs and thumbscrews (Profoto's hardware doesn't fit a grid). It has four thumbscrews (inside) and four Velcro straps (outside) to secured dish. It creates the same size diffusion pattern as black grid. The difference between the two grids is the falloff on the outside of the diffusion pattern. It has a softer fall off compared to black grid's high contrast fall off.