Feature:1. Durable Construction: Made of mirrorpolished marine grade 304 stainless steel for maximum rust resistance and durability.2. Telescoping Adjuster: Adjuster glides easily to any length between 299mm to 534mm and can be easily secured a position with locking on each position by rotation the black conical point knob.3. Strong Practicability: This window adjusters allow windows to remain open to ventilate areas as needed. Used for yacht and marine hardware.4. Wide Application: Ideal for the lighter door, cabinet doors, window, lighter hatches, table leaves, fore hatch and a wide variety of uses.5. Easy Installation: Easy to install, no complicated tools required, convenient to use, save time and effort, and can be used for a long time.Specification:Item Type: Hatch AdjusterMaterial: 304 Stainless steelLength: Approx. 299-534mm/11.77-21.02inApplication: RV, yacht, ship.Package List:1 x Hatch Adjuster