Floral wires' number stands for the size (diameter) or thickness or the wire. The smaller the number, the thicker the wire. 
 
Length: 35 cm
Color : Green
 
Size 18 - thick, need to use plier to bend. It is commonly used for most of the flowers like peony, rose, poppy, billy ball and etc
size 22 -  moderate, can be bend with fingers. It is commonly used for chamomile. 
size 24 - soft, bendable with fingers. It is commonly used for leafs, foliages and baby's breath flowers.
 
Rough quantity per pack:  
size18=12pcs
size22=25pcs
size24=33pcs