Each set includes 2 glossy short prong caps, 1 socket, and 1 stud.
Prong length refers only to the cap piece. #20 sockets and studs can be used interchangeably with #20 standard, long, and short prong lengths.
Short caps have 4.6mm prongs, compared to 5.2mm standard caps. Short caps should be used on thinner materials, such as 2 layers of PUL, cotton, or thin fleece. If you attempt to use caps which are too short for your material, then your snaps may fall off. Read more.
Snaps are packaged by weight so count is approximate.