Powerful and perfect
I bought the small block magnets to make a sled magnet for dragging across the ground to pick up nails and screws etc.
I set the magnets in a block of timber and put a thin piece of plastic over them to make it easier to remove the material it picks up.
These magnets are incredibly powerful for the size and do the job I intended very well.
Great service from these guys... will be visiting the site for more later.