Siska size 4 brass grommet, 12.7 mm hole, 26.7 mm flange

textile

Use it

(import "parts/textile/SISKA-GROMMET-4.ik" as p)

In a design on ink: ask your agent for it by name, or by what it must be.

Frame of reference

width x, length y centered, underside z=0; strips start y=0; buckle halves share closed frame