Put tool number 20 into the hole of hook 12. Loosen the Allen screw in the tool holder 11 and fasten tool number 21. Position the skate above the hook 12 in such a way that tool number 20 protrudes through the outer part of the eyelet. Lower the tool holder 11 so that the tool 21 fits around the outer part of the eyelet. Press down and the eyelet should come loose. It will not come completely free; remove it with a pair of tongs.