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Title: Very unimpressed
Review: The caps are a deal breaker for these bottles. The actual glass bottle is a nice product. Nice blue colour, nice weight, etc. But the lids are absolute rubbish. If you even slightly ove tighten the lid, the entire side of the plastic lid splits up the middle rendering it useless. The lids are made of soft, brittle material that splits apart very easily. Why did I slightly over tighten? Because liquid was leaking out of the top like crazy! If these bottles are going to be casually used for thick things like oils, and will always remain upright, they will work. If not, don't buy.
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