I have purchased these magnets to hold down work for our laser machine. The machine came with 4 magnets where I learnt that when snapping together, they break. So hunting for replacment I found difficult until I finally found AMF Magnetics. I searched on eBay, searched on Amazon and could not find the size I needed to work with the laser. So finally I found AMF and guess what, they had the size I needed.
Easy online purchase and the standard free delivery had no delays and worked well for me.
Thank you AMF.