Gritty drum kits, new release-
Grit Kit includes 45 presets, 7920 samples and 7.4GB. It's on sale now for only $29. Hurry, after the intro period ends on September 1st, the price goes to $49. This library requires the full version of Kontakt 5.1 or later and is not supported by the free Kontakt Player.
http://youtu.be/H-xeg_Tyj9Q
Click Here To Order Grit Kit Now!
 
 

If you're producing Hard Rock or Grunge (or Hip Hop in some cases) this could 
be useful...the video seems more like a "Guitar" ad then a Drum ad...but 
the sounds are decent.