These field points from NAP are perfect for the range or back yard practice. Bullet Style points will thread onto any standard insert, but many archers like to match the diameter of the field point to the diameter of the shaft for a snag-free arrow. Most standard arrows are 5/16" in diameter, but if you shoot a specialty arrow or a crossbow bolt, be sure to measure the arrow shaft diameter before you order. Match the weight of your field point to the weight of your broadhead and the outside diameter of the point to your arrow shaft diameter and you are ready to shoot.