5pcs in 1 pack = $40 4 z7 z2 S# \% o K. z, c" X3 j7 ?/ V+ Q, q
Available 400pcs total.) s+ U, G4 h* |# B+ i
No negotiation at all: b+ ^; y) Z* _! ]1 E* }0 F# E
9 R: e' Y5 J- dLeave you phone number with amount you want
$ H/ K0 s1 H! @2 C
KF means Korea Filter and 80/94 means 80%/90% of filter efficiency. Hence, it means a mask that has 80%/94% of filter efficiency. KF 80 means the mask is certified to filter out at least 80% of the pollutants. KF 94 means certified to filter out 94% of pollutants.