Now you can control headspace. <br> The Redding Competition Shellholder Kit #1 consists of five shellholders in varying heights with increments of .002". <br> Allows you to increase or decrease the case to chamber headspace without adjusting the dies. Storage box included. <br> Each shellholder has a distinct black oxide finish and is clearly marked to indicate the amount it will decrease case-to-chamber headspace. <br> You can now easily adjust the shoulder bump to customize cases to your specific chamber. <br><br><b>Technical Information:</b><br><br><ul><li>Packaged 5 piece set in .002" increments (+.002", +.004", +.008" and +.010") </li><li>Each shellholder is clearly marked to indicate the amount it will decrease case to chamber headspace. </li><li>Set allows you to adjust case to chamber headspace of your reloads with a simple shellholder change. </li></ul>