WooCommerce - Insert product description after shop loop tit

<?php
  // WooCommerce - Insert product description after shop loop title
  add_action( 'woocommerce_after_shop_loop_item_title', 'insert_description', 20 );
  function insert_description() {
    global $product;
    print substr( $product->get_description(), 0, 100 );
  }