The Rolling + Stop Float Flashmer combines a rolling swivel, crystal beads, and elongated stop-floats on a nylon backing. The components are threaded together onto the main line to set up a dropper rig or a sliding sinker rig. The stops adjust the swivel’s range of motion, and the swivel allows the terminal to rotate. Size S is designed for 0.20 mm line with a breaking strength of 9 kg; size M for 0.30 mm line with 14 kg; and size L for 0.40 mm line with 19 kg. Each packet contains four sets of the same size.