Thicker gauge steel would make for sturdier construction and gives a heaviness on the cocktail shaker. Though lots of Boston shakers are made of tin for safer shakes, the glass rim on this Kotai shaker is tempered—the rim is heated up and cooled down for durable glass that won’t crack https://shaker-cabinets02479.blogsidea.com/43909559/a-review-of-shaker-cabinets