The Hornady Lock-N-Load Classic Single Stage Press Shellholder Retaining Ring is a great replacement item to have on hand for your Classic Press. You never know when a part might break or wear out. Be prepared for anything with these high quality factory replacement parts, they will have your Lock-N-Load press running like new again in no time. This retaining ring slips onto the press's ram to hold the shellholder in place. Fits: Hornady Lock-N-Load Classic Single Stage Press