This Grinder is made of high-quality aluminum alloy. We also have an option of zinc alloy. Both can proform smooth grinding and reduce friction to chop and beat all tobacco and spices. Diameter of lid is 2 1/8″. There are more size options like 1 1/2″, 1 7/8″ and 2 1/2″, and options of 4 layers and 2 layers to meet different demands. Logo can be laser engraved on the lid to advertise your brand. Prices for over 1,000 pcs are ocean shipping prices.