Originally Posted by: PonyOneThey're Kramer QuadRails, pretty much the same theoretical construction as a Duncan HotRail, but, just like a humbucker, which uses two different polarity single coils to cancel hum, these use in effect two Hot Rails combined into one uberhumbucker.

This doesn't necessarily translate into good tone. I tore the QuadRail out of my Kramer's bridge and replaced it with a DiMarzio Tone Zone; world of difference. I left the neck in because I don't use the neck position much.

Physically they have the same footprint as a regular humbucker; they look a bit bigger because they have a mounting ring around them and there's also a single DualRail in the mid position that looks like it's part of the neck pickup in one of the shots.

You can buy them from the company, they're okay, they have no hum whatsoever which is sweet, but I find them a bit dry tonally for my tastes. Good for metal though, I suppose.