The Hornady Lock-N-Load Primer Tube is used to hold primers in the automatic primer feed attachment for the Hornady Lock-N-Load Classic Press. Simply turn the primers upside down in a primer flip tray (sold separately) and press the tube down on them until the tube is loaded up. This eliminates fumbling around with primers so there is limited chances for contamination with oily fingers.Fits: Hornady Lock-N-Load Classic Single Stage Press Automatic Primer Feed (Item 717-515)Notes: Holds up to 70 PrimersIncludes cotter pin and primer pickupApprox. 8 1/2" long