Easy to Assemble The leak tester is put together through three separate parts. Its foolproof design allows users to assemble and operate this leak tester in a convenient manner. Leakage Detect The Pacific leak tester can help the user test out possible leakage of their Liquid Cooling System before filling in the coolant. Compatible with G1/4" Port The leak tester is compatible with all G1/4" ports, which allows users to test out their liquid cooling system from Thermaltake products and beyond. Straightforward Measurements Simply pump the air until the indicator reaches the green zone (anywhere between 0.5 to 1 bar) and wait to see the indicator's reaction. If the indicator drops below the green zone within 5 mins, then users would have to check their build for possible leakage.