Feature:1. Widely Applicable: One queen cell can meet all the uses for JZBZ, for Jenter, for Big Royal Jelly, and for Nicot cell cup, perfect for beekeeping work.2. Durable Plastic: This queen bee base bar is made of premium plastic material, which is strong and durable and has a long service life.3. Not Easy to Fall Off: The cell bars of the queen bee base are connected together, which is not easy to fall off, and is more convenient to transport and move.4. Quick Installation: The queen rearing base cell cups are simple and quick to install, easy to operate, and can be used with confidence.5. Practical Bee Farming Tool: This beekeeping queen cell cup holder frame set is a practical bee farming tool, suitable for bee farms or bee breeding bases.Specification:Item Type: QueenBeeBase Cell BarMaterial: PlasticYellow Bar Size: 23 x 3.5 x 4.5cm / 9.1 x 1.4 x 1.8inBrown Bar Size: 21.5 x 3 x 1.6cm / 8.5 x 1.2 x 0.6inSuitable for: beekeeping.Package List:1 Pair xBeekeeping Base Frame4 Pairs x Queen Bee Base Cell Bar50 x For Jenter Queen Cell Cup