is connected to a second end of the turbocharger drive application_number US 72890703 A description an exemplary embodiment of a turbine wheel assembly 10 is illustrated in fig1 the turbine wheel assembly 10 includes a turbine wheel 11 having a turbine wheel base 12 and a plurality of turbine blades 13 the plurality of turbine blades 13 may be disposed on the outer periphery of the turbine wheel base 12 and may be adapted to rotate the turbine wheel base 12 when driven by the expansion of hot exhaust gases the plurality of turbine blades 13 may be rigidly fixed to the turbine wheel base 12 using conventional means or they may be movable with respect to the turbine wheel base 12 such as for example by providing variable pitch turbine blades or variable geometry turbine blades the plurality of turbine blades 13 may also be integral with the turbine wheel base 12 the turbine wheel assembly 10 may also include a connecting means such as for example a threaded portion 14 the threaded portion 14 may be integral to turbine wheel base 12 or may be connected to the base through any means known in the art such as for example inertia welding the threaded portion 14 may be adapted to transmit power from the turbine wheel assembly 10 to a corresponding connecting member in the embodiment of fig1 the threaded portion 14 of the turbine wheel assembly 10 is adapted to engage a corresponding connecting means of a turbocharger drive 18 in this embodiment the connecting means is a threaded portion 16.