Precision Pour Measured Pourers 1/2 Oz "CLEAR" Measured Pour. #1 Selling Brand- 3 Per Pack, Made entirely in the USA By reducing overpouring and spills with Precision Pour spouts you can serve an additional two to four drinks per bottle. This means that a Precision Pour spout will pay for itself in just one bottle. Three ball bearings, rather than the old standard two, for a smoother, more accurate pour. A new bottom design that ensures that the ball bearings will never fall into the bottle. Precision Pour spouts are made using virgin plastic, a far more durable material. Some old-style spouts also employ polycarbonate plastic which will break down in alcohol. We use no poly-carbonates. Some old-style spouts are assembled using glue that has been proven to break down in alcohol. Precision Pour spouts are assembled using a patented locking system, avoiding glue altogether. With Precision Pour 3 Ball Liquor Pour spouts, you can offer your customers the same delicious taste, drink after drink, no matter who is tending bar.