The EL26541 is a New Elinchrom Rotalux speedring for S-mount/bowens lights with improved mechanical rod mounts built to withstand more stress even when bigger boxes are assembled and disassembled, color coding for mounting square, rectangular and strip boxes. One ring for all 11 Elinchrom Rotalux softboxes. The blue and red color marks will indicate and help how to setup square/recta and strip shaped Rotalux softboxes.