Cirrus Glass Grinder, thoughtfully engineered for the everyday smoker. Milled aluminum, sculpted walnut core, and a borosilicate base in perfect harmony. Elevated through design, beauty follows simplicity. Hand-crafted for the perfect grind. - - - PRODUCT FEATURES: Borosilicate glass 6mm thickness Black walnut lid with natural grain Magnetic & silicone closure Aluminum teeth for smooth grind 2.5inch diameter