Pony beads have a standard pony-bead-sized hole. These are made of plastics, pearl, and are available in various forms like mini pony bead, opaque pony beads, glow in dark beads, sparkle pony bead, pearl pony bead, neon pony beads and many others. The plastic pony bead are available in almost every shape - butterfly, round, triangle, square, heart, and flowers.