Probrother&reg; 5PCS Soshine USB Light Keychain Super Bright 6 LEDs Mini USB Light Lamp With Smart Touch Electrodeless Dimming Switch (Warm light) Made of food grade 304 Stainless steel, durable and healthy USES:With shaking bottle/cup, makes your nutrition dissolve more totally and quickly Suitable for most of bottles with cover, Put the stainless ball into the bottle and cover, then shake it uniformly It's great to have a bunch of these to put in multiple cups to mix my drinks. 100% brand new and high quality Material: stainless steel Size:4.5x5.5cm 3 stainless replacement mixing wire whisk balls