サイズ:
Retractable: 0.4-0.55 m -10 ringsRetractable: 0.5-0.7m-10 ringsRetractable:0.7-1.2m -10 ringsRetractable:1.1-1.9m -20 ringsRetractable:1.6-2.5, -20 ringsRetractable:2.1-3.1m -20 ringsRetractable:2.6-3.5m -20 ringsRetractable:3.1-4.0m -20 ringsRetractable: -30 ringsRetractable:4.1-5.0m -30 rings