●Package content: Includes 4pcs garden sprinklers, measuring approximately 5x2.5cm. The safety relief valve is applicable to 3L/5L/8L backpack spray. ●Material: The garden sprinkler head is made of PP material, which is sturdy and durable. ●Save time: Lawn sprinklers cover a large area and water the entire garden. You dont have to move the garden sprinkler to save time and energy. ●Ease of use: Simply connect the lawn sprinkler to the hose connection hydraulic seal and open it. Installing the lawn sprinkler only takes a few seconds to water the lawn, garden, lawn, and flowers. ●Easy to replace: This air compressor pressure reducing valve has a fine craftsmanship and provides good protection for internal parts. Perfect replacement of old or damaged valves. The safety release valve is applicable to 3L/5L/8L backpack spray, and also to the watering part of garden spray.