Another ingenious friend for the humble mason jar, this cocktail shaker and strainer attachment is ideal for whipping up (and perhaps even toting) top notch sips on the go. The two part top includes a shaking lid and pourer for easy-peasy cocktail hour. Campari camping, anyone? Easily screws off and on for cleaning and storage. With a 70mm/2.75" diameter, this fits the included Italian Quattro Stagioni Glass Canning Jar, standard mouth Mason Jars, Kilner Universal jars, or any commercial jar with a 70mm/2.75" diameter mouth. 18/10 stainless steel, food safe, dishwasher safe.