Buy from Amazon : http://www.amazon.com/gp/product/B009JZ05UW?tag=scratchandsti-20 <br /> <br />Profoto 100501 RFi Speedring Adapter Profoto (Black) <br /> <br />Profoto RFi Softboxes are color coded to make assembly simple <br />Just match the colored rod with the appropriate color-coded hole on the Speed ring <br />Whether you are using a square octagonal or rectangular softbox set up is quick and easy
