CannaCrush's two-piece 2.5" grinder features 50 specially designed diamond-cut teeth that are fabricated from aircraft-grade anodized aluminum on CNC machines and are scratch resistant, which prevents flaking or peeling. Its knurled grip makes grinding easier, and its lid stays in place with a neodymium magnet that also keeps the odour locked inside and maintains freshness. This grinder is available in black or grey and comes with a lifetime warranty.