5/8" Post & O-Ring NP Rivet Back
5/5" Ball Post & O-Ring Rivet Back 10 & 100 Pack
Product includes 10 or 100 heads and 10 or 100 ridged rivets.
IMPORTANT: These are NOT SCREW BACKS. The backs do not have threads to screw in, they simply have ridges that crush into the head when firmly hit with a mallet and rivet setter.