diff --git a/src/mako/cli/output/components/Spinner.php b/src/mako/cli/output/components/Spinner.php
index ae896b85a..d6ce4fed6 100644
--- a/src/mako/cli/output/components/Spinner.php
+++ b/src/mako/cli/output/components/Spinner.php
@@ -17,7 +17,6 @@
 use function posix_getpid;
 use function posix_getppid;
 use function posix_kill;
-use function sprintf;
 use function usleep;
 
 /**
@@ -51,7 +50,7 @@ protected function canFork(): bool
 	/**
 	 * Draws the spinner.
 	 */
-	protected function spinner(string $message, string $template): void
+	protected function spinner(string $message): void
 	{
 		$i = 0;
 
@@ -62,7 +61,7 @@ protected function spinner(string $message, string $template): void
 		$timeBetweenRedraw = $this->frames->getTimeBetweenRedraw();
 
 		while (true) {
-			$this->output->write("\r" . sprintf($template, $frames[$i++ % $frameCount]) . " {$message}");
+			$this->output->write("\r" . $frames[$i++ % $frameCount] . " {$message}");
 
 			if (posix_kill(posix_getpid(), 0) === false) {
 				break;
@@ -79,7 +78,7 @@ protected function spinner(string $message, string $template): void
 	/**
 	 * Draws the spinner.
 	 */
-	public function spin(string $message, callable $callback, string $template = '%s'): mixed
+	public function spin(string $message, callable $callback): mixed
 	{
 		$result = null;
 
@@ -110,7 +109,7 @@ public function spin(string $message, callable $callback, string $template = '%s
 		else {
 			// We're in the child process so we'll display the spinner
 
-			$this->spinner($message, $template);
+			$this->spinner($message);
 		}
 
 		$this->output->getCursor()->restore();
diff --git a/src/mako/cli/output/components/progress/ProgressBar.php b/src/mako/cli/output/components/progress/ProgressBar.php
index a32134a87..96436cb4d 100644
--- a/src/mako/cli/output/components/progress/ProgressBar.php
+++ b/src/mako/cli/output/components/progress/ProgressBar.php
@@ -7,6 +7,8 @@
 
 namespace mako\cli\output\components\progress;
 
+use function sprintf;
+
 /**
  * Progress bar.
  */
@@ -22,12 +24,21 @@ class ProgressBar
 	 */
 	protected const string FILLED = '█';
 
+	/**
+	 * Constructor.
+	 */
+	public function __construct(
+		protected string $emptyTemplate = '%s',
+		protected string $filledTemplate = '%s'
+	) {
+	}
+
 	/**
 	 * Returns the empty progress bar character.
 	 */
 	public function getEmpty(): string
 	{
-		return static::EMPTY;
+		return sprintf($this->emptyTemplate, static::EMPTY);
 	}
 
 	/**
@@ -35,6 +46,6 @@ public function getEmpty(): string
 	 */
 	public function getFilled(): string
 	{
-		return static::FILLED;
+		return sprintf($this->filledTemplate, static::FILLED);
 	}
 }
diff --git a/src/mako/cli/output/components/spinner/Frames.php b/src/mako/cli/output/components/spinner/Frames.php
index 9b0ecedf1..9ae348cf9 100644
--- a/src/mako/cli/output/components/spinner/Frames.php
+++ b/src/mako/cli/output/components/spinner/Frames.php
@@ -7,6 +7,9 @@
 
 namespace mako\cli\output\components\spinner;
 
+use function array_map;
+use function sprintf;
+
 /**
  * Frames.
  */
@@ -22,12 +25,20 @@ class Frames
 	 */
 	protected const array FRAMES = ['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏'];
 
+	/**
+	 * Constructor.
+	 */
+	public function __construct(
+		protected string $template = '%s'
+	) {
+	}
+
 	/**
 	 * Returns the spinner frames.
 	 */
 	public function getFrames(): array
 	{
-		return static::FRAMES;
+		return array_map(fn ($frame) => sprintf($this->template, $frame), static::FRAMES);
 	}
 
 	/**
diff --git a/src/mako/reactor/traits/CommandHelperTrait.php b/src/mako/reactor/traits/CommandHelperTrait.php
index e2ab8d46b..164e88375 100644
--- a/src/mako/reactor/traits/CommandHelperTrait.php
+++ b/src/mako/reactor/traits/CommandHelperTrait.php
@@ -17,6 +17,7 @@
 use mako\cli\output\components\Countdown;
 use mako\cli\output\components\OrderedList;
 use mako\cli\output\components\Progress;
+use mako\cli\output\components\progress\ProgressBar;
 use mako\cli\output\components\ProgressIterator;
 use mako\cli\output\components\Spinner;
 use mako\cli\output\components\spinner\Frames;
@@ -115,14 +116,15 @@ protected function progressBar(int $items, float $minTimeBetweenRedraw = 0.1, ?s
 	/**
 	 * Draws a progress bar and returns a progress instance.
 	 */
-	protected function progress(int $itemCount, string $description = '', int $width = 50, float $minTimeBetweenRedraw = 0.1): Progress
+	protected function progress(int $itemCount, string $description = '', int $width = 50, float $minTimeBetweenRedraw = 0.1, ProgressBar $progressBar = new ProgressBar): Progress
 	{
 		$progressBar = new Progress(
 			$this->output,
 			$itemCount,
 			$description,
 			$width,
-			$minTimeBetweenRedraw
+			$minTimeBetweenRedraw,
+			$progressBar
 		);
 
 		$progressBar->draw();
@@ -133,23 +135,24 @@ protected function progress(int $itemCount, string $description = '', int $width
 	/**
 	 * Returns a progress iterator instance.
 	 */
-	protected function progressIterator(array|(Countable&Traversable) $items, string $description = '', int $width = 50, float $minTimeBetweenRedraw = 0.1): ProgressIterator
+	protected function progressIterator(array|(Countable&Traversable) $items, string $description = '', int $width = 50, float $minTimeBetweenRedraw = 0.1, ProgressBar $progressBar = new ProgressBar): ProgressIterator
 	{
 		return new ProgressIterator(
 			$this->output,
 			$items,
 			$description,
 			$width,
-			$minTimeBetweenRedraw
+			$minTimeBetweenRedraw,
+			$progressBar
 		);
 	}
 
 	/**
 	 * Draws a spinner while executing the callback.
 	 */
-	protected function spinner(string $message, callable $callback, string $template = '%s', Frames $frames = new Frames): void
+	protected function spinner(string $message, callable $callback, Frames $frames = new Frames): void
 	{
-		(new Spinner($this->output, $frames))->spin($message, $callback, $template);
+		(new Spinner($this->output, $frames))->spin($message, $callback);
 	}
 
 	/**
diff --git a/tests/unit/cli/output/components/progress/ProgressBarTest.php b/tests/unit/cli/output/components/progress/ProgressBarTest.php
new file mode 100644
index 000000000..6d8ad3b85
--- /dev/null
+++ b/tests/unit/cli/output/components/progress/ProgressBarTest.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * @copyright Frederic G. Østby
+ * @license   http://www.makoframework.com/license
+ */
+
+namespace mako\tests\unit\cli\output\components\progress;
+
+use mako\cli\output\components\progress\ProgressBar;
+use mako\tests\TestCase;
+use PHPUnit\Framework\Attributes\Group;
+
+#[Group('unit')]
+class ProgressBarTest extends TestCase
+{
+	/**
+	 *
+	 */
+	public function testWithDefaultTemplate(): void
+	{
+		$progressBar = new ProgressBar;
+
+		$this->assertSame('─', $progressBar->getEmpty());
+
+		$this->assertSame('█', $progressBar->getFilled());
+	}
+
+	/**
+	 *
+	 */
+	public function testWithCustomTemplate(): void
+	{
+		$progressBar = new ProgressBar('x%sx', 'y%sy');
+
+		$this->assertSame('x─x', $progressBar->getEmpty());
+
+		$this->assertSame('y█y', $progressBar->getFilled());
+	}
+}
diff --git a/tests/unit/cli/output/components/spinner/FramesTest.php b/tests/unit/cli/output/components/spinner/FramesTest.php
new file mode 100644
index 000000000..673cb65ed
--- /dev/null
+++ b/tests/unit/cli/output/components/spinner/FramesTest.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * @copyright Frederic G. Østby
+ * @license   http://www.makoframework.com/license
+ */
+
+namespace mako\tests\unit\cli\output\components\progress;
+
+use mako\cli\output\components\spinner\Frames;
+use mako\tests\TestCase;
+use PHPUnit\Framework\Attributes\Group;
+
+#[Group('unit')]
+class FramesTest extends TestCase
+{
+	/**
+	 *
+	 */
+	public function testWithDefaultTemplate(): void
+	{
+		$frames = new Frames;
+
+		$this->assertSame(['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏'], $frames->getFrames());
+	}
+
+	/**
+	 *
+	 */
+	public function testWithCustomTemplate(): void
+	{
+		$frames = new Frames('x%sx');
+
+		$this->assertSame(['x⠋x', 'x⠙x', 'x⠹x', 'x⠸x', 'x⠼x', 'x⠴x', 'x⠦x', 'x⠧x', 'x⠇x', 'x⠏x'], $frames->getFrames());
+	}
+}