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Diving Scuba Tank Cylinder Knocker Ball Underwater Signal Device for Outdoor Sport

<ul><li>Light Material: Made of silicone and PA66 material, which is light weight, easy to carry, durable, can be for a long time</li><li>Easy to Use: The knocker ball is easy to hold and use in underwater situation and environment, increase the possibility of being helped in special condition</li><li>Using Method: Put it on a diving cylinder, pull the strap in the water, and when you let go, the ball will hit the with a sound, making you easier to be heared by your partner or others</li></ul>

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Specification: Item Type: Diving Cylinder Knocker Ball Material: Silicone + PA66 Application: For Underwater , Outdoor Sport Weight: Approx.37g/1.3oz Package List: 1 x Diving Cylinder Knocker Ball Note: Diving Banger