Used to install damper pulleys with recessed threads or under drive pulleys on many late model vehicles where traditional type installers will not work. Applications include but are not limited to: Ford: 2004 thru current - 3.0L, 3.5L, 4.6L, 5.4L, 6.8L GM: 2008 thru current - 4.8L, 5.3L, 5.7L, 6.0L, 7.0L Dodge/Chrysler: 2006 thru current -3.7L, 4.7L, 5.7L, 6.1L.