Thicker gauge steel will make for sturdier building and gives a heaviness to 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 sturdy glass that received’t crack https://shaker-cabinets26857.gynoblog.com/36438292/facts-about-shaker-cabinets-revealed