Carbon Express BullDog Collars Nano-Pro RZ 500 12 pk.

BullDog nock collars provide added strength and durability to the nock end of the shaft. Helps prevent cracks from nock end impacts. Provides added strength and durability;Prevents cracks from nock end impacts;Available in sizes: 400, 450, 550, 600, 650, 500 RZ, 550 RZ, 600 RZ