For a limited time, get 2 for the price of 1. Size 20, B36 neon yellow, matte finish + size 16, B4 dark gray, matte finish. 100 complete sets in each color, for a total of 200 sets (that's 400 caps, 200 sockets, 200 studs) for just $5. That's 50% off the regular price.
Size 20 is the most commonly used size, suitable for most diapers, clothing and general applications. Size 16 is commonly used for baby or toddler clothing, pacifier clips, or other applications with thinner material.