Additional # 303-768-8681.

Note:  Currently all OVT 3-5, OVT 3-6, and OVT 3-7 tubing supplies are on back order.  We apologies for any inconvenience and will ship as soon as possible.  Please call (877-699-8439) for any tubing supply orders for current update.  Glasses are still available for immediate shipping.  Thank you.