was looking in a shop and saw you could buy single EMG 81 and a single EMG 85 however I saw two sets. 1 was Zakk Wylde 81/85 and the other was Kerry King 81/85 is there any difference between them like between the single handed ones and the zakkyones etc ?

single = just one pickup, either a single EMG 81 or 85
ZW pack = an EMG 81 and an EMG 85 with 2 tone and 2 volume pots
KK pack: an EMG 81 and an EMG 85 with pots and an afterburner gain booster

google is your friend
ohai little sig.