The product featured is a complete high performance and quality rebuild solution, for the Marina 1700/1800 Gearbox. The rebuild kit is equipped with the necessary bearings, gasket and oil seals required to rebuild the unit. The rebuild kit is also compatible with the following gearbox types: MG Midget 1500, Dolomite 1850, Ital 1300/1800, Ital 1300/1800 gearbox units. The package contents are the following: 1x Constant Mesh Pinion Bearing, 1x Main Shaft Front Bearing, 1x Main Shaft Rear Bearing, 1x Main Shaft Extention Bearing, 1x Lay Roller Packet (Enough for 1 Laygear), 1x Lay Shaft, 1x Oil Seal Set, 1x Spring and Ball Set, 1x Single Rail Overdrive Gasket Set (J type). Please note we only use high quality branded bearings ensuring that our products are high in quality and performance.