NAP Thunderhead O Rings 12 pk. Slip onto the shoulder of a point or broadhead to aid concentricity;Prevents points from loosening;Allows broadhead adjustment and tuningtable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1300 Product Group Code: 1300G Product Sub Group 1: 1300G1 Pack Size: 12 Inactive: No