Originally Posted by Ozzy Biz
On the QOTSA DVD, theres some bonus footage including Grohl playing with them for a few songs. It looks like he's playing just what Top Cat said, and I'm 100% certain its a 24" ride.
Back when he was with Nirvana I know he used a 24 bass, 18 floor, 15 rack, 8x14 snare, 15 hats, 18 & 20 crashes and a 22 ride. It's probably similar (looks to me when I've seen him) although I can't be certain if his ride is now a 24.