The Supertensioner Dark Blue is a high-performance lane line tensioner designed for use in competitive swimming pools. Featuring a turnbuckle tensioning system, it allows for quick and precise adjustments to keep racing lanes properly aligned and its UV-resistant resin construction helps ensure long-term durability. Its accident-proof locking mechanism provides secure lane tension without the need for tools, making pool reconfiguration fast and hassle-free. Compatible with both Anti Wave Maximum and Forerunner lanes, this supertensioner is a versatile and reliable choice for professional and Olympic-level pools.