The 2.2″ Kannastör® 4 piece Clear Top Grinder/Jar is finished in silver and is manufactured from food-grade aluminium and glass. The glass top and compartment enable you to check what you are grinding and also just how much (if any!) ground herb is left without unscrewing its top. The grinder/jar comes with a replaceable 60 mesh screen (100 mesh also available to buy) and a limited lifetime warranty (Screens – 30 days).Kannastör® grinders are manufactured from food-grade 61/60 aluminium and are really designed and built to last. The sifting chamber can be removed to transform it into a 3-piece unit for easier portability if that is required. Grinding your herbs enables maximum efficiency, whether you are smoking or vaping, and Kannastör® has an enviable reputation for well-designed and durable grinders that are truly made to last.Limited Lifetime Warranty against manufacturer defects, including broken teeth for any reason.Dimensions – 2.625″ (H) x 2.125″ (D).