Behringer 'HellBabe' Wah Wah effect pedal, made with 3ds Max 2010 and comes with both V-Ray (Adv 1.50 SP5) and Mental Ray versions (two different file downloads)

90% accuracy to real life unit.
Comes with highly detailed guitar cable.

Please note that UVW mapping may not work on other formats, but this can be easily tweaked in your software of choice.
Other formats are available and exported from 3ds Max 2010

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* See high-res render images below *

Other formats were exported from 3ds Max 2010.

Textures are available in a separate zip file.

Thanks for your interest , please rate ;)