3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnets N42 (42 Pack)

Perfect for finding screws

Those are even better to find inwall screws! I started with spheres, but how do you mark precisely the position? Here comes the countersunk ring magnet!

Worked exactly as advertised

I got them to use in prototype development of tool heads for multi tool head 3d printer development. Worked as advertised and my requirements.

Part of my security system. Worked perfectly. Great Company with response and delivery.