There is zero plastic in these hemp grinders. Santa Cruz Shredder uses all natural hemp with a hemp based binder. These grinders are 100% biodegradable so you can feel good about throwing it in a household garbage. Santa Cruz Shredder hemp grinders are extremely durable! After nearly a year of hard labor, their test models did not show any sign of slowing down. Designed to give you a consistent fluffy grind that Santa Cruz Shredder is known for, the 4-piece version of their classic hemp grinder certainly does that, as well as giving you the very welcome option of a sifter screen to trap kief and crystals in the bottom section of the grinder. The new colour hemp Shredders are made with natural dyes to keep these completely biodegradable.