3pcs Milkshake Protein Blender, YOFAN Food Grade Stainless Steel Wire Mixer Mixing Ball For Shaker,Drinking Bottle Cup MATERIAL:Made of food grade 304 Stainless steel, durable and healthy USES:With shaking bottle/cup, makes your nutrition dissolve more totally and quickly FOR MOST BOTTLES:Suitable for most of bottles with cover, Put the stainless ball into the bottle and cover, then shake it uniformly EASY TO CLEAN.HOW GREAT to have a bunch of these to put in multiple cups to mix my drinks. PACKAGE:3 stainless mixing wire whisk balls replacement YOFAN mixing whisk ball replacements are made of food-grade 304 stainless steel.Health and safety is the goal of YOFAN. Size issuitable for not onlyshaker bottles, but also otherbottles with cover.Just put this ball in and shake the bottle!They&#039;re just the right size and easy to clean.YOFANproducts are easy to use. We know that these little things always slop off without attention.So it comes with 3 replacements in this package.