One air release tool for fishing. Compared to commercially available products, the cost performance is significantly better. ◎ Comes with a string to prevent loss. ◎ Includes a stainless steel rod for cleaning the needle hole. Without this, it clogs quickly. Blowing air into it doesn't easily clear the blockage. ◎ Needle length: approximately 30mm, needle tip inner diameter: 0.9mm, needle tip outer diameter: 1.2mm. (Air won't escape with a thinner needle. A thicker needle will damage small fish. This is the optimal thickness for small fish.) ★ For small filefish and female filefish during spawning season, release them after air release. Without air release, they can't dive on their own and become food for kites. Small scorpionfish are the same. ★ On boats with circulating seawater tanks, air release allows fish to swim normally and vigorously until the end of the trip. Watching filefish swimming energetically is enjoyable. If you keep them alive for a long time, you'll grow fond of them, and you'll often release them at the end of the trip ^_^. ◎ See the photos for air release instructions. Insert the needle about 5mm, and the air will hiss out. It's easier to release air by gently pressing on the inflated part of the swim bladder while inserting the needle. Be careful not to press too hard, as the internal organs may come out of the anus. Release about half the air; apparently, it's not good to release all of it. Air is said to re-accumulate in the swim bladder of released fish. ★ 【Caution】 Sharpen the needle tip with a file, etc., from time to time. If the needle tip is dull, it won't penetrate the soft, elastic swim bladder even if it pierces the skin. #FishingTackle #AirRelease #AirRemoval #Needle #SwimBladderAirRelease #SwimBladderAirRemoval