Set includes driving screw, thrust bearing, and 13 threaded adapters necessary to work on a wide range of domestic and some import harmonic balancers Five long adapters for use on Dodge Hemi, generation III and IV GM motors, some Chrysler and some Ford including 3. 5L and 4. 0L The 1. 75" spacer allows the tool to work more efficiently on deep harmonic balancers Fit Type: Vehicle Specific