Phd mixer ball shaker 750ml the phd mixer ball shaker is as functional and effective as its quality for creamy lump free nutrition shakes just drop the wire ball in with your ingredients and shake top chefs have relied on the wire whisk for years to mix and blend their ingredients into a smooth and light consistency the mixer ball moves freely throughout the bottle as you shake it mixing the thickest of drinks with ease simply add your ingredients shake and drink the mixer ball works o