Stock product, there is no details data, the test for buyers' reference: Weight: about 367g The actual test of air pump performance is also very good, 12V voltage test, positive pressure 0.18Mpa, negative pressure maximum -80kpa. 24V voltage test, positive pressure blocking limit can be 0.25Mpa, negative pressure -82kpa, 24V voltage test flow is about 6L / minute.
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