A Boston shaker like this is the style of a vibrator you usually find behind a high-end craft barThey usually provide a better waterproof seal than other shakers and do not freeze when shaken with iceYou will find that they provide a cleaner,leak-free casting. The Boston Shaker is designed to be durable and suitable for high volume bars,but is suitable for any family bartenderMade of food grade stainless steel,safe and non-polluting,will not rust or dripManually select the perfect waterproof sealThe kit has been carefully designed,hand- and tested to a perfect seal every time. Elegant Gifts:The Boston Bartender is both attractive and elegant,a perfect birthday or Christmas gift for those who like to make cocktails or want to learn to make cocktails. Designed for bartenders and serious loversThis shaker set brings a revolutionary experience Color:silver Material:Stainless steel Size:23*10*10cm Package Contents: 2* stainless steel cup 1* mixing spoon 1* crimping measuring cup 1* filter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.