The CVS Centrifuge Tube Holder allows you to easily manage your samples, saving time and money due to damaged tubes or lost samples. Designed to accept both Shortcone, or Pear Shaped tubes. Standard with 4 slots. Can easily be wall mounted or placed on workbench. Rubber feet keep the CVS Tube Holder from slipping on flat surfaces. Durable and long lasting hammer tone powder coating. Part Number: CVS S10D-RACK—Shortcone Tubes CVS S10B-RACK—Pear Shaped Tubes