The Sweetleaf Pocket-Sized 2" Aluminum Grinder is a high quality grinder made with highly polished aluminum shell with stainless steel pins that easily tear through herbs, leaving you with the perfect consistency for a even burning smoke. This grinder from the visionaries at Sweetleaf is the perfect size for traveling with and for personal use. Simply put your herbs in to the grinder and rotate the two pieces and you will have uniformly grinded herbs.