2010 and up model Allison LCT1000, LCT2000 and LCT2400 model transmissions units use a larger spanner nut than the earlier units. This Allison output shaft spanner socket, made in the USA by Adapt-A-Case, is milled from tough AISI 1018 steel, so you can be assured it will last in your tool box for many projects.
The T-1000-4AC pictured above with the spanner nut for reference.
