WuffWuff, as described on its listing, is a heavy distortion footpedal “that Howls with Harmonics and has plenty of Sustain!” This effects pedal works best with a 12V power supply, and features a single knob to control the volume.
The pedal comes as an assembled and working unit, not as a kit, and as such there’s not a huge amount of info on its product page. You can, however, hear how awesome sounds it makes in the video below. Even those of us that don’t play electric guitar have to really appreciate its bright silver finish—thus, apparently, the SilverBullet moniker—that looks like it would hold up to use at venues commensurate with its really excellent sound.
Of course, if you want to go an entirely opposite direction with your guitar effects production, we featured a blank guitar effects pedal here, allowing you to make things sound exactly the way you want. You might also check out the 528 products listed as of this writing on the expansive Tindie sound section—worth a browse just to see what’s out there!