These are never used heads that were run through a pressure cooker to remove the primer. The heads shipped now do not have primer. These heads are from prior shipments. This is the atomizer Head for the eGo-C suitable for the Type A or B system (also eCab, 510CC, eGo-CC). The atomizer Head contains the wick and coil. These have a DOA 24 hour warranty from the day of receipt of the order. PLEASE NOTE: WHILE I DID USE DISTILLED WATER, THERE MAY BE WATER MARKS ON THESE HEADS.Please specify in your order comments if you would like regular or LR if you have a preference.