This Towle Living Copper Plated Double Jigger is ideal for mixing cool, refreshing cocktails. The exterior is copper-plated, while the interior is constructed of food-safe 18/10 stainless steel. Makes for a great gift or the perfect accessory for your home bar. Hand-wash with gentle detergent and soft cloth; dry right away. Do not soak. Double jigger has both a 20 ml and 40 ml capacity.