Bottomless Tele pickup's . These pickups have no bottom base plate they are wound to an average of 10k ~ 13k. They sound like a Tele on steroids, almost like a p-90 . They are very full sounding and not focused because they do not have the bottom plate. They can also have a coil tap so there are 2 outputs levels.
One is a 9k the second is at 13k .

$90 each