hi, n35 and n38 is most ppl using, n35 is the lowest strength rating, barely ppl use n42 and n50, it is too expensive and break easily, but the strength is greater, the higher the n? number = the greater the strength rating, but it also proportional to the fragileness. thanks. BTW I dont sell N40 and above, its easily to pack for delivery. sorry. thanks.
Hot Glue Crafts 2018-06-19