Home grinders Bulldog 4 -layer Ancient Silver Zinc Alloy Grinder Bulldog 4 -layer Ancient Silver Zinc Alloy Grinder$16.50 50mm Bulldog spice1 Zinc Alloy Grinders, Spec: 4 -layer Ancient Silver Bulldog 4 -layer Ancient Silver Zinc Alloy Grinder quantity Add to cart Description . Material: zinc alloy