Japanese double-sided jigger carries the measurements of 20 ml on one side and 40 ml on the opposite. Double sided jigger comes 20-40 ml size.Durable and undeformable food safe stainless steel with a round lip for the rim not hurting your finger deep well will prevent liquid from overflowing. 2 wells weld better and not easier to break off in the middle circle. This 40 ml jigger gives a refined appearance polished silky with a touch feeling like velvet and ed comfortable.Characters of this cocktail jigger are laser engraved outside you do not worry about wearing out just after several times such like printing-on we all know that printed on the surface must rub off markings.These jiggers give you the control and precision you need when preparing the cocktails. Your friends will be impressed with your perfect mixing capabilities and the drinks you'll be able to serve using the same equipment as professional bartenders.