zirconia Ferrule .(1.SC/PC/SM/WO. 2.SC/PC/SM/WF. 3.SC/PC/MM/WO. 4.SC/PC/MM/WF. 5.SC/APC/SM/WO.6.SC/APC/SM/WF. 7.LC/PC/SM/WO. 8.LC/PC/SM/WF. 9.LC/PC/MM/WO. 10.LC/PC/MM/WF