Love these!

Size 1: 35 g, 26 y.
Size 2: 55 g, 40 y.
Size 3: 80 g, 60 y.
Size 4: 120 g, 90 y.

Stitch counts:
Ch 3 counts as a st.
Size 1:
R 1: 9 st.
R 2: 15 st.
R 3: 21 st.
R 4: 27 st.
R 5: 33 st.
R 6: 39 st.
R 7: 45 st, not incl loop.

Size 2:
R 8: 51 st.
R 9: 57 st, not incl loop.

Size 3:
R 10: 63 st.
R 11: 69 st, not incl loop.

Size 4:
R 12: 75 st.
R 13: 81 st, not incl loop.

Clarification:
The design lists two hook sizes. The bigger one is for crocheting the project. The smaller on is for weaving in ends.