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<option value=""><?php esc_html_e('Round item', 'ithemeland-bulk-variation-editing-for-woocommerce'); ?></option>
<option value="5">5</option>
<option value="10">10</option>
<option value="19">19</option>
<option value="29">29</option>
<option value="39">39</option>
<option value="49">49</option>
<option value="59">59</option>
<option value="69">69</option>
<option value="79">79</option>
<option value="89">89</option>
<option value="99">99</option>