I have 4 DiveRite air cells for sale. All 4 are for single tanks. Two are black, twin inflator wreck wings and two are red, single inflator wreck wings. All four wings appear to be new but have been in storage for several years. One of the red single inflator cells has some damage to the outer cover on the top and is $50. The other 3 are $150 each. Call Bill at (352)732-9779. Located in Ocala, North Central Florida for local pickup. Email bill@ocaladive.com Thanks, Bill.