Sertodo Copper JGR-2 Double Sided Jigger, 1 oz and 2 oz Measured Shots, Hand Hammered 100% Pure Coppeer, 2 oz, Set of 2 1 and 2 fluid ounce cups each with graduated measurements: 1/4, 1/2 and 3/4, 1 1/2markings respectively Sleek, comfortable shape with an elegant curve for smooth pouring Heavy gauge, Pure copper from 100% recycled sources for a healthier Environment Heavy gauge, Pure copper from 100% recycled sources for a healthier Environment Copper is an inherently clean material with strong natural antimicrobial, antibacterial and antifungal properties