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This size cap is a perfect fit for our 4 oz. blue-glass bottle. Use these caps for quick, mess free dispensing, without having to invert the bottle. A special straw and valve keeps the oil right at the top of the well, so all you have to do is insert a syringe and draw out the amount of oil you need.

For help in determining which size of Adapta-Cap™ is the right size for your bottle, please click here.