The nippers are used to trim the hoof wall
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/17671297@N00">Belinda Hankins Miller</a> from U.S.A.
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/17671297@N00/789763706/">nippers</a>