EK Supremacy CPU Water Block - Plexi (Socket 1156/1155/1366/2011/AM2/AM2+/AM3/AM3+/939/XEON) High Performance Fits Socket 1156/1155/1366/2011/AM2/AM2+/AM3/AM3+/939/XEON G1/4" Threads (Fittings not included). Copper Base, Plexi Top *No refunds accepted for this item if the package has been opened. Defective items can be exchanged with a properly functioning item. Please verfiy compatibility before purchasing*