Tolco 200309 Pro-Blend Proportioner for Quart, 28mm, 2.5 Height, 13 Width, 3 oz. Capacity, ClearBlack Pack of 12

The Tolco 200309 Pro-Blend Proportioner is a set of 12 clear-black proportioners that are an inexpensive and accurate solution for measuring product proportions. Despite the slight inconvenience of the proportioners being ideal for gallon bottles, customers have found that they work well with quart bottles with some modification. Some customers received only one proportioner in the pack instead of 12, but these were exceptions rather than the rule. The proportioners are inexpensive and well-built, providing accurate measuring of product proportions, and customers see them as well worth the money.