Thank you very much for viewing! This is an eel trapping device. Due to its popularity, I couldn't keep up with production and had to stop listing it. If I can't keep up again, I will stop listing it, so please understand. Thank you for the many repeat purchases. I've included screenshots of happy posts in the product photos. They give me a lot of energy when I'm making them. Thank you! Due to rising material costs, the price will increase as soon as I run out of materials. Please understand. It has entrances on both sides, allowing eels to enter from either side. You put the bait in the middle. There is a gap of about 5 cm under the bait box to allow eels to pass through. There may be wood chips or other debris attached to the acrylic board, etc. Please understand. It does not affect the use of the trap. I also use the single-entry type, but I use this type every year. It is especially effective in stagnant rivers. The two-entry type has a much better eel capture rate and number of eels caught per catch than the single-entry type. Last year, I caught 28 eels with this trap. Eight of them were over 1 kg. I also use single-hook fishing, but this trap allows me to set it up anytime without being bothered by bait thieves, so I do both. There are some cracks in the wood, but it doesn't affect the function. I have experience as a carpenter, but this is a handmade product, so please understand. It uses cedar wood. The size is 11cm x 11cm for 4 boxes. The length of the tubes is approximately 100cm each. The bait room is partitioned, so the bait will not run out even if eels enter. The smell of the bait will continue to linger, so several eels will enter when conditions are favorable. Once they pass through the entrance, they cannot escape. Please store it in a place away from direct sunlight when not in use. I put my heart into it, and it takes a lot of time and effort to make the two-sided trap. It's a rare design, and the material costs and shipping costs are also quite high, so this is the price. I want you to experience the excitement of catching eels! It will be packaged in cardboard and shipped. Tube, rolling, box