Note: When using a Mason jar lid, first rotate the lid counterclockwise by at least 30 degrees (to ensure the threads on the sealing disk align properly with the jar threads). Then turn the lid clockwise to screw it on. This will complete the seal between the lid and the jar. Environmental protection and durability: the use of high-quality stainless steel material, to solve the plastic material used in the process of the breakage of the situation, while avoiding the silicone wood and other materials to produce black dirt problems Reinforced handle: stainless steel thickened handle, load-bearing capacity plastic handle even after refrigeration can be used to keep the hand well adapted to temperature High sealing: the cap is designed with a threaded closure that fits perfectly into the Mason jar, and the top spout is fully silicone-plugged, which fits perfectly into the pouring spout and does not cause any leakage when inverted High quality, high hardness stainless steel material, no rust, precision polished, flat edges, comfortable to the touch Only suitable for wide mouth Mason jars, bringing unexpected results