Clone a single cell or group of cells by surrounding them with this Pyrex® glass open ended cloning cylinder from Corning®. Dip the end of the cylinder into sterile silicone grease before pressing to the bottom of a culture dish to create an isolated well. Cylinders are autoclavable or can be dry heat sterilized. Available in three sizes and packaged 125 per case. Nonsterile. Reusable.