Size 20, long-prong caps (6.2mm prong). 15 colors x 25 sets per color = 375 sets total. 1 set = 2 long-prong caps, 1 socket, 1 stud.
Prong length refers only to the cap piece. The same #20 sockets and studs can be used with all lengths of #20 caps.
Long caps have 6.2mm prongs, compared to 5.2mm standard caps. Long caps should only be used on very thick material, such as prefold diapers. If you attempt to use caps which are too long for your material, then your snaps won't close properly. Read more.
Snaps are packaged by weight so count is approximate. Pricing reflects possible minor quantity discrepancies.