AGI-PRO BULL RING BRASS 5/16 IN X 3 IN by Animal Health variants 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Please call the store at (434) 392-4192 to place your order. Brass bull ring has a sharp, easy piercing design. Easy to remove after use. Comes with allen wrench and extra lock screw.