Pourer adjusts to 8 sizes 58, 34, 78, 1 oz, 1 18, 1 14, 1 38, 1 12 and counts each pour. Perfectly measures and meaters each shot. Accurate counter counts each drink poured. Fits all bottles. Just pull the trigger, tip and release. Premeasured shot is dispensed. For your next drink, there is not need to turn the bottle back up. Just pull the trigger and release. Liq Trol will pour any liquor even the thickest liquers. Measured units save on liquor costs and the counter provides full accounting of all drinks poured. Adjusts to 8 different measured pours. Flexible rubber collor adapts to any bottle. One year guarantee.