Green Monkey Zinc Grinder - 2.2" (55mm) Grinders by n/a Sale! Login to view price. Size Single Box of 10 (Save $5) This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Green Monkey brand 4 piece Zinc 2.2" (55mm) Qty available: 0 SKU: GM-55-Zinc-9 Tweet