WP second excerpt length

call it with:
----------------------------

<?php echo substr( get_the_excerpt(), 0, strrpos( substr( get_the_excerpt(), 0, 75), ' ' ) ); ?>

v2 with link:
----------------------------

<a title="<?php the_title_attribute(); ?>" href="<?php the_permalink(); ?>">
<strong><?php echo substr( get_the_excerpt(), 0, strrpos( substr( get_the_excerpt(), 0, 175), ' ' ) ); ?></strong>
</a>