For setting the edge of the waist
Available in size A-G, A is the smallest G the largest. See below for bar sizing;
A - 6 x 6mm
B - 7 x 7mm
C - 8 x 10mm
D - 12 x 12mm
E - 14 x 16mm
F - 16 x 16mm
G - 17 x 17mm
The iron is fitted into a square handle