Two pair or (4) Drum imaging unit reset chips/fuses for Samsung Imaging Drum for CLX-3185, CLX-3185N, CLX-3185FW and  CLX-3185FN.  If the drum shows no signs of wear such as smudges why not just reuse the drum and reset the counter?  Most drums can be re-used up to 2-3 times before a need to replace it.  Our chip fuse will reset your counter to 0 of 16K pages.

E-Z Instructions provided upon request as a link to instruction video..