Reuse Empty Spools! You can quickly wind and store fishing line using empty spools (smooth rotation with built-in bearings). You can also rewind the wound line back onto the reel (tension can be freely adjusted). It can be fixed with a suction cup, so it can be attached to tables, window glass, car hoods, etc., and is also good for winding line onto a reel at the fishing spot. Size (including cover): 190x90x100mm Weight: 195g Spool Mounting Width: 70mm Shaft Diameter: φ5.6mm MADE IN JAPAN Only opened once. The package has aged slightly. Thank you for your consideration.