DURABLE CONSTRUCTION: Made with high-quality aluminum alloy, this manual spice grinder is built to last. It’s sturdy construction ensures that it will withstand frequent use without breaking down allowing for a smoother, more consistent grind. PORTABLE & COMPACT: With its low profile design, this manual spice grinder is easy to carry with you on-the-go, whether you're in the kitchen, traveling or camping, ensuring that you always have fresh spices at your fingertips. RAZOR-SHARP TEETH: This grinder's razor-sharp teeth make grinding your favorite herbs spices a breeze, even the toughest ones. USE IT RIGHT: Keep the grinder flat in your hands when grinding so product does not slip between the cracks of your top and bottom, getting sticky or stuck. Use properly. EASY GRIP & TURN: Unlike smooth grinders, this specially designed grinder has grooves that provides a more comfortable grip, allowing for effortless grinding with less strain on your hands.