• Secure Fit: They have a wide base or prong that pushes and twists into grooves on special cell bars, providing stability.
• Visibility: Often made in smoky or clear colors for excellent visibility of the larva inside, aiding grafting.
• Durable & Reusable: Made from high-quality plastic for repeated use.
• Packaged and shipped in a set of 50 cups
  
  
  How They're Used (Simplified):
  Beekeepers use a special grafting tool (also available here) to transfer tiny larvae into these cups, which are pre-filled with royal jelly.

                     These cups are then inserted into a queen-rearing frame's cell bars.