Set up your espresso space just like a cafe with this double stainless and rubber knockbox from Rattleware. built from heavy-gauge stainless steel, this large knockbox offers a sturdy build and large capacity for busy coffee shops or large households. Each knockbox is equipped with an industrial-design stainless outer and a matching inner knockbox. Best of all, this large knockbox is decked out with rubber isolation on the case lip, feet and knock bar to help keep your knocks quieter on your countertops. Dishwasher-safe.