Product Description
25 mm Neodymium Magnetic Cup with captive 1/4-20 Stainless Screw (Standard Camera Screw) Holding Force: 137N (Newton)
Screw is designed to be turned with a small coin (preferably non-magnetic, like a US penny).
This magnet can hold a small light camera or any device that uses a standard camera nut.
(Clean steel surface, no thick paint, no vertical attachments like mounting a heavy camera on a pole, because the camera will slide down and possibly detach and fall)