The RCBS Automatic Primer Feed Tube is part of the RCBS Automatic Primer Feed Combo, and it is just the tool you need to speed up your reloading process. Not only does the RCBS Automatic Primer Feed Tube making your reloading process faster than ever, the RCBS Automatic Primer Feed Combo also curbs misfires and helps to prevent contamination of primer due to oil on your fingers.