Features: APPLICATION — Set of 2 works on Any 1998-2007 for Volvo D12, D16 Engines & 2008-2018 for Volvo Mack Truck, D11 D13 D16 MP7 MP8 MP10 Engines. DIRECT REPLACEMENT — OEM number references: 9996956, 9996620 & 88800014 FUNCTION — Special designed to rotate the flywheel of crankshaft for correcting the timing position. Help rotate your crankshaft with ease. QUALITY — Corrosion-resistant & Quality Steel construction with extreme anti-wear property. .