Gold Tip Nock Laser II & III Flat Flo Orange 1dz. These supplied by Gold Tip are .3 I.D. precision nocks that can be installed by a professional archer ensuring you get the best fit possible. When you need dependable nocks to fit your crossbow look no further than the Gold Tip Crossbow Insert Nocks. These are constructed from plastic making them tougher than their wooden or carbon counterparts. The Gold Tip Crossbow Insert Nock is the perfect addition to any crossbow bolts allowing you to reuse them many more times. Features of Gold Tip Crossbow Nocks Weight: 11 gr. Flat Plastic Fits all Swift and Ballistic bolts (.3 I.D.) Package Contents: Gold Tip Crossbow Nocks Gold Tip nocks are manufactured from 100percent virgin materials yeilding the toughest and straightest nocks in the industry. Features/Specifications: Weight: 11 gr. Flat PlasticFits all Swift and Ballistic bolts (.3 I.D.)