This is an intermediate drive gear for Qualcast lawnmowers, situated between the cassette drive gear and the drive pulley gear. It is compatible with Suffolk Qualcast, QX system, and Atco Balmoral models 14, 17, and 20. This drive gear replaces part number F016102379. It weighs 0.06kg. Compatible models include: Atco Balmoral 14S, 14S F016307542, 14SE, 14SE F016307642, 17S, 17S F016308542, 17SE, 17SE F016308642, 20S, 20S 2000 ON, 20S F016309542, 20SE, 20SE 2000 ON, 20SE F016309642. Also compatible with Qualcast Classic Petrol 35S 2000 ON, Classic Petrol 35S F016305542, Classic Petrol 43S 2000 ON, and Classic Petrol 43S F016306542.