ADJUSTABLE DESIGN: Equipped with spring-loaded buckles, which help to better secure the tent pegs and prevent the ground pegs from falling or rotating due to the collapse of the tent. Retractable spring design, can be used for different thickness of boards.COMBINATION - Equipped with D-shaped mountaineering buckles, so the tent can be easily installed and adjusted on boards with gaps, suitable for locking the ropes and preventing them from sliding.VERSATILE USE: The tent pegs can hold the tent firmly in place during heavy winds and rain. They also help to adjust the ropes to any length you like.MATERIAL: Made of aluminum alloy, durable, corrosion resistant, smooth and lightweight.WIDE APPLICATION: The deck board anchor hooks can be used to adjust the tent ropes for a secure tent. It can be used to install and secure tents and canopies on decks or boards when camping outdoors or in home gardens and balconies.