Professional bartender choice: The set contains 2 large Boston shakers, one with a capacity of 700 ml and one with a capacity of 500 ml. This cocktail shaker has a high capacity and is robust enough. It is a must have for professional bartenders and family bartenders, suitable for beginners and experienced bartenders. High-quality materials: the cocktail shaker is made of high-quality stainless steel and the exterior is polished and mirrored, which is strong, corrosion resistant and not easy to rust. The stainless steel cocktail shaker does not break as easily as a glass shaker, and there is no rubber seal, so it does not crack and deform over time and is very durable. Good air tightness: This Golrisen cocktail shaker set has been selected and tested to ensure perfect airtightness. The shaker fits perfectly. During the use of the shaker, the drink is not poured, frozen, dripped or overflowed. When ice cubes are added and shaken, no leak or overflow leaks and it does not freeze. Easy to clean: the cocktail shaker can be used in bars, parties or at home and is suitable for family celebrations and guest entertainment. The shaker can be cleaned in the dishwasher or washed by hand. When not in use, the shaker cups can be stacked and stored. Wide application: with this shaker set, you can make cocktails from different spirits such as whisky, scotch, vodka, tequila, gin, rum, Manhattan, old-fashioned, margarita, brandy, martini, sake etc.