Easily one of the best quality standard grips available around this price bracket.  This updated version comes with a vented metal base motor plate, helping to keep the motor cool.  The actual grip includes metal threaded inserts instead of the normal plastic ones making the bottom plate less likely to fall out or strip a screw.

Comes with 4 larger Philips screws for connecting the grip to the gearbox and 2 Philips screws for the motor plate.

Have tested the grip with a number of different gearbox and motor combinations and always provides a great fit.  I've been using one of these in testing gearbox components for the past few years, always taking the motor out, putting back in, repeat and it's still solid.