Gold Tip's crossbow bowls are the toughest, most accurate and most consistent crossbow bolts ever produced with a straightness tolerance of ±..001 Their unique insert system provides increased front-of-center balance and overall weight for the ultimate in accuracy and durability. The Laser II is the ideal replacement for crossbow shooters desiring enhanced performance. The finished bolts come with standard 3 fletch and GT Moon Nocks and brass inserts installed.