Sold in multiples of 50 in caps only or full sets.
Each full snap is comprised of one cap with the Penguin, one plain cap, one stud and one socket. The plain cap, the background on the painted cap, the stud and the socket are B3 White.
Size 20 caps are 12.4mm in diameter and prongs are 5.6mm
WARNING - Loose pieces can present a choking hazard to small children