11/16'' - 18 LEFT HAND THREAD, 3.875'' FROM END TO CENTER
DUE TO VARYING STOCK FROM OUR SUPPLIERS, THESE MAY COME WITH A GREASE ZERK IN THE HEAD OR SEALED WITH NO GREASE ZERK (SELF LUBRICATING). IF YOU HAVE A PREFERENCE, PLEASE LET US KNOW PRIOR TO PURCHASING SO WE CAN CONFIRM WE HAVE THE STYLE..