Yes, they are super strong.
Attachment 244370
And come in a variety of shapes that suit this hobby.
Attachment 244371
Used them in brush handles, as well as razor racks to keep the blades safely in contact with whatever I would make them from.
Used the b.b. Sized ones behind felt in vertical 7 day racks as well as under cabinet hangers for a few..
Great things, but they 'may' impart a permanent magnetic charge to the steel over time. That sort of thing could be a problem for those with ferrous whiskers I suppose..
Cheers.
And thanks Mike, nice to be playin with razors again..
:tu