Range: 1.125" to 2.69" (28.58 - 68.3mm).  Will remove or insert camshaft bearings in nearly all engines from compact cars to heavy trucks. The expander has a neoprene sleeve over which the split driving plugs are mounted and expanded to size.  Driving shaft, driving shaft extension, expander unit, five (5) split driving plugs, two (2) driving collars, centering cone and blow molded case.