<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<script language="javascript">
<!--
$(function () {
    var divContent = $('#materialInst');
    var botaoAdicionar = $('a[data-id="1"]');
    var i = 1;

    //Ao clicar em adicionar ele cria uma linha com novos campos
    $(botaoAdicionar).click(function () {


        $('<div class="conteudoIndividual"><div><input type="number" name="qitem0' + i + '" id="qitem0"><label for="qitem0">Quantidade</label></div><div><select id="item0" name="item0' + i + '"><option value="" disabled selected>Material</option><option value="1">item1</option><option value="2">item2</option><option value="3">item3</option></select><a href="#" class="linkRemover"> Remover Campos</a></div><div><input disabled type="number" name="vitem0' + i + '" id="item0"><label for="vitem0">Valor unitário R$</label></div><div><input disabled type="number" name="vtitem0' + i + '" id="vtitem0"><label for="vtitem0">Valor total R$</label></div></div>').appendTo(divContent);

        $('#removehidden').remove();
        i++;
        $('<input type="hidden" name="quantidadeCampos" value="' + i + '" id="removehidden">').appendTo(divContent);
    });

    //Cliquando em remover a linha é eliminada
    $('#materialInst').on('click', '.linkRemover', function () {
        $(this).parents('.conteudoIndividual').remove();
        i--;
    });
});
//-->
</script>


<div id="materialInst">
  <div>
    <div>
      <input type="number" name="qitem0" id="qitem0">
      <label for="qitem0">Quantidade</label>
    </div>
    <div>
      <select id="item0" name="item0">
                <option value="" disabled selected>Material</option>
                <option value="1">item1</option>
                <option value="2">item2</option>
                <option value="3">item3</option>
                </select>
    </div>
    <div>
      <input disabled type="number" name="vitem0" id="item0">
      <label for="vitem0">Valor unitário R$</label>
    </div>
    <div>
      <input disabled type="number" name="vtitem0" id="vtitem0">
      <label for="vtitem0">Valor total R$</label>
    </div>
  </div>
</div>
<a href="#" id="adicionar" data-id="1">Clonar</a>