diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/src/Predefined/Br/LinhaDigitavel.php b/src/Predefined/Br/LinhaDigitavel.php
new file mode 100644
index 0000000..f348d8d
--- /dev/null
+++ b/src/Predefined/Br/LinhaDigitavel.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Mask\Predefined\Br;
+
+use Mask\AbstractMask;
+
+class LinhaDigitavel extends AbstractMask
+{
+    public function getStringMask()
+    {
+        return '#####.##### #####.###### #####.###### # ##############';
+    }
+}
diff --git a/tests/Mask/Predefined/Br/LinhaDigitavelTest.php b/tests/Mask/Predefined/Br/LinhaDigitavelTest.php
new file mode 100644
index 0000000..102accc
--- /dev/null
+++ b/tests/Mask/Predefined/Br/LinhaDigitavelTest.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace Tests\Mask\Predefined\Br;
+
+use Mask\Predefined\Br\LinhaDigitavel;
+use PHPUnit_Framework_TestCase;
+
+class LinhaDigitavelTest extends PHPUnit_Framework_TestCase
+{
+    use \Tests\Mask\Structure\SetUp;
+
+    public function testGetStringMask()
+    {
+        $this->assertContains('.', (new LinhaDigitavel)->getStringMask());
+        $this->assertContains('#', (new LinhaDigitavel)->getStringMask());
+        $this->assertNotContains('/', (new LinhaDigitavel)->getStringMask());
+        $this->assertNotContains('\\', (new LinhaDigitavel)->getStringMask());
+        $this->assertNotContains('-', (new LinhaDigitavel)->getStringMask());
+    }
+
+    public function provider()
+    {
+        return [
+            ['00190000090312855701821548161179591160000002222'],
+        ];
+    }
+
+    /**
+     * @dataProvider provider
+     */
+    public function testMaskDefault($linhaDigitavel)
+    {
+        $this->assertContains('.', (new LinhaDigitavel)->mask($linhaDigitavel)->toString());
+        $this->assertTrue(strlen($linhaDigitavel) < strlen((new LinhaDigitavel)->mask($linhaDigitavel)->toString()));
+    }
+
+    /**
+     * @dataProvider provider
+     */
+    public function testMaskReal($linhaDigitavel)
+    {
+        $this->assertContains('.', (new LinhaDigitavel)->mask($linhaDigitavel)->toString());
+        $this->assertEquals('00190.00009 03128.557018 21548.161179 5 91160000002222', (new LinhaDigitavel)->mask($linhaDigitavel)->toString());
+    }
+}