The Trailer Park Boy’s 4 piece grinders are made from aluminum. The top pieces are held in place magnetically, to make grinding easier and to prevent the lid from coming off. These grinder are equipped with diamond cut teeth, which expertly tear and fluff your herbs. The exterior is adorned with iconic imagery of The Boys faces on the top and the Trailer Park Boys classic logo. You really need to get yourself one of these, ATODISO!!