If you use foundation in your bee hives, you must do something to ensure that the bees build the comb straight. You can use cross wire, or you can use these reusable one inch metal frame wax support pins. Just place 2 – 3 on each side of the frame in the predrilled holes of the side bars and secure the wax between the open ends of the support pin. Once the bees have drawn out the comb, you can remove the pins to reuse them. Much easier and quicker than cross wiring the frames. Color may vary.