This is a bulk sale of air pumps for ornamental fish. All units have been tested for power and are confirmed to be working with sound. However, actual operation has not been confirmed by placing them in a water tank. Therefore, we cannot guarantee their operation in actual use. ⸻ 【Confirmed Manufacturers/Model Numbers】 ・e-AIR 6000WB ・e-AIR 4000WB ・Lung GX100 N2 ・non-noise W300 ・non-noise W600 ・Super non-noise W1000 ・CHIKARA α 4000SW ・Pulse 3000 (AIR PUMP) ※Model numbers are confirmed from the markings on the units. ※We do not guarantee all performance, output, or durability. ⸻ 【Condition】 ・Used items, therefore there are scratches, dirt, yellowing, and signs of use. ・Some units may have deteriorated cords, discoloration, and age-related degradation. ・Cleaning is limited to basic cleaning. ※Everything in the photos is included. ⸻ 【Important Notes】 ・Operation in water has not been confirmed. ・These are being sold as-is / junk items. Please purchase only if you understand that these are for repair, parts, or spare use. Returns, refunds, and exchanges are not accepted. ⸻ 【Shipping】 ・Will be shipped in simple packaging. ・We will re-confirm power operation before shipping.