Snap spring for swivel supports (swivel)

This is a flexible spring for counterbalancing Instech swivels (purchased separately; not designed for stainless steel swivels).

With this flexible spring to balance the weight and prevent loosening when the animal moves, all Instech swivels can be easily applied or removed from the arm with one hand and without tools. Usable in cages with slots, they allow animals to be moved in and out of the cage without disconnecting the tether. Also available in cage rack configurations.