You are purchasing a frag of the picture colony.
Choose the frag size from the drop down menu. 
 
1/2" Frags are measured by a ruler and are at least 1/2".
1" Frags are measured by a ruler and are at least 1".
1" multibranch will be 1" frag with 2 or more branches.
 
More About this coral.
Water parameters: Alk 7-8, Ca 400-420, Mg 1400, NO3<2, PO4<0.03
Most frags are 100% aquacultured by Y&Y Corals.