100 Self Healing Injection Ports - 13mm fits 1/4" or 7mm hole

Material: butyl rubber You get 100 Self Healing Injection Ports For Sealing 1/4 inch or 7mm opening, Steam Sterilization safe Widely used in mycology. Self Healing Rubber Injection Ports Steam Sterilization Safe 13mm/0.5118" for culture bottle.13mm Vial Rubber Stoppers are for a 7 mm or 1/4 inch diameter hole opening.Special ridged ring in the center of the injection port stem that creates a lock during sterilization and keeps port in place.Excellent Heat Stability (butyl rubber).Great for Liquid Culture,Injection, Supplemented Substrate Jars, Grain Masters. We ship to all 50 US states including PO boxes. Ships from a small business in Florida. We Do Not Ship To Unverified Addresses. Buyers Is Responsible For Providing Correct Shipping Address. We Are Not Responsible For Orders Returned To Us As Non Deliverable. Buyer Agrees To Pay Double The Actual Cost To Reship Order To Compensate Us For The Costs Of Returned Postage On Their Non Deliverable Order. As A Business We Pay To Have Non Deliverable Items Shipped Back To Us. No Refunds Given On Non Deliverable Orders.