Feature 1[Premium Material] The lane line tightener is made of 304 stainless steel and ABS material, which is scratch resistant, resistant and durable. 2[S Hook Design] Stainless steel S hook of the tightener and stainless steel tightening shaft, the tightness of the pool lane line is controlled by the tightening shaft. 3[Easy To Use] Professional lane line tightener, the rope of the pool lane line can be fixed on the tightening shaft directly from the back hole, and the tightening can be adjusted. 4[Tensile] Swimming pool lane rope tensioner has high tensile strength, is not easy to be damaged, has strong buoyancy, is wear resistant and has a . 5[Multi Application] Lane line tensioner is widely used in beaches, indoor and outdoor swimming pools, etc, small size, lightweight, easy to carry and use when going out. Item Type: Lane Line Tensioner Material: 304 Stainless Steel, ABS Product Tightening Size: Approx. 32.5cm/12.8in, Diameter: Approx. 5cm/1.9in Weight: Approx. 600g/21.1oz Application: Swimming Lane Line Tensioner Package List 1 x Lane Line Tensioner Note Manual measurement, please allow some errors.