This little gadget makes catching queens on the comb a breeze. The spring action snaps the cage shut around the queen and the worker bees sized slots allow them to come and go while keeping the queen inside. You will not hurt another queen while trying to isolate her.
This clip is a very cheap knock off of a good product. THIS version, however, is complete crap. The plastic is cheap and bendy, the spring is weak. The hinge pin doesnt stay in place and works its way out and the plastic arrived cracked.