The Kupo KS-466 magnet plate allows you to quickly place a 1Superknuckle on a steel surface.

The coated rubber can protect the magnet from damage, and also avoid scratching a painted surface. The rubber coating also limits the magnet from slipping on smooth painted surfaces.

The KS-466 contains a neodymium magnet and a steel backing plate with coated black rubber. 

Dimensions
Size of round plate: 66mm in diameter and 8mm in thickness
Ballhead diameter 26mm, to fit the Kupo Superknuckle system