ICBW (don't really get this technical stuff) but I think it's single coil. Having said that, I swapped the stock bridge PUP in my Tanglewater Classic J for one of these, and it's quiet as a church mouse.
(I think it was Tel's recommendation that prompted me to do so, in which case, I thank you sah...
I'm sure there are better (whatever that means...) J PUPs out there...but for a tenner?
There was nothing really wrong tonally with the stock Tanglewater PUP, but it was always a bit weedy compared with the P.
Swapping in the Entwistle one has made it more balanced volume wise, added a bit more punch solo'd, and makes it sound more growly blended with the P.