The Nikon Close-Up Speedlight Kit R1C1 is a lens-mounted strobe system designed for (you'll never believe it) close-up photography. It includes two SB-R200 Speedlight units, an SX-1 Attachment Ring, lens adapter rings for 52mm, 62mm, 67mm, 72mm, and 77mm lens threads, a couple of Speedlight stands to position the SB-R200 units off camera, a pair of SW-11 Extreme Close-Up Positioning Adapters for the SB-R200 units, plus assorted accessories and a carrying case. This system does not include an SB-R200 radio trigger, but the SB-R200 units can be triggered optically by a camera's built-in flash (this kit includes a blocker so the camera's flash doesn't interfere with your shot. Light cosmetic wear, good function.