It’s a little thicker than the P-04.
Number/Inner Diameter/Outer Diameter/Wire Diameter/Weight
#1/3.3mm/4.8mm/0.6mm/0.05g
#2/3.9mm/5.5mm/0.7mm/0.08g
#3/4.5mm/6.1mm/0.8mm/0.12g
#4/5.1mm/7.8mm/1.1mm/0.18g
The numbers may vary slightly depending on the lot.