Features: 1. Cummins Engine Barring Tool: Works on Dodge Pickups 3.9L, 5.9L, 6.7L & 8.3L diesels engines and Cummins B/C Series diesels engines 2. Just insert the tool into the flywheel housing until it engages the ring gear, then attach a 1/2″ square drive ratchet or breaker bar and turn. 3. Paccar MX 13 Engine Barring Tool: Works on PACCAR MX, PACCAR MX PMCI-2, PACCAR MX-13 PCI and PACCAR MX-13 Engine Commonly Used on Kenworth T880 and Peterbuilt Trucks. (1/2″ Drive) 4. Superior Material: Crafted from high standard Steel with black finish for great durability and superior protection, resistance to corrosion, providing a long-term service. .