All of Gold Tip's inserts, target points, and traditional weight system adapters are built to accept various weights, such as 10, and 20 grains. These weights allow you to customize your FOC to reach the extreme accuracy you desire. Use the Gold Tip Weight System Adjustment Wrench to customize that weight even after you have glued in your point or insert. Simply pull the nock or pin bushing out and use the weight wrench to add or subtract weight.