RACK ONLY - BOTTLES SOLD SEPERATELY: Steve Spangler's Baby Soda Bottle Rack test tube rack is for the #1 best test tubes for kids, Steve Spangler's Baby Soda Bottles! FOR CLASSROOM USE: Steve Spangler's Baby Soda Bottle Rack is used for safe science experiments in classrooms everywhere! HOLDS 6 BABY SODA BOTTLES: Steve Spangler's Baby Soda Bottle Rack is a test tube rack that holds 6 Baby Soda Bottles. COLLAPSABLE TEST TUBE RACK: Steve Spangler's Baby Soda Bottle Rack is a collapsible test tube rack, so it's easy to store and transport. PERFECT FOR YOUNG SCIENTISTS: Steve Spangler's Baby Soda Bottle Rack is an essential for any mad scientist's lab!