NAP Thunderglo Lighted Nocks Red Universal Fit 6 pk. Polycarbonate blend Nock with aluminum shaft;Bright LED Illumination;Auto ON when nock is shot;LED Stays ON until user unclicks the nock;Universal collars fits Arrow Shafts (G/X/H/S)table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1100 Product Group Code: 1100B Product Sub Group 1: 1100B2 Pack Size: 6 Inactive: No