The metal is made of stainless steel, which not break like the glass , is sturdy and , and has no rubber seals, which not break and deform over time, allowing you to use it for a long time with confidence You receive a set of 6 pieces stainless steel cocktail shaker set, 2 sizes, including 3 pieces 18 oz and 3 pieces 28 oz shakers, plenty of quantity, 2 sizes to meet your multiple uses LEAK PROOF BOSTON SHAKER: Tested to be more waterproof and less likely to leak than glass shakers, this Boston shaker set is less likely to freeze, drip or spill when pouring drinks Dishwasher Safe: The cocktail shaker is easy to clean after making mixed drinks, you can easily put it in the dishwasher and wait for it to clean again, effectively saving your time and energy Great Choice for Bartenders: The bartender shaker can be quickly cooled for mixing classic craft cocktails, beverages and more, sturdy enough for high-volume bars and home bars, Perfect for bartenders and can be a must-have at the bar Drinking accessories and supplies for home bars and restaurants Colour: black Material:Stainless steel Package Contents: 3sets x Cocktail Shakers Only the above package content, other products are not included. Note: Light reflection 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.