TRYMAG Magnets 400Pcs Neodymium Print Small Rare Earth Tiny Mini Round Multi-Use Printer Magnet for 3D Printing Craft Fridge DIY Miniatures Refrigerator Office Kitchen Cabinet Crafts and Science

Really powerful magnets, but BEWARE! i must not have read the description that well - they come in 3 sizes and i thought the size i wanted was the smallest. it wasn't, it was the largest. the other two sizes are very small. they work fine but are too small for my needs.

Got this size because another customer said they got them for the tiny ducks people leave behind on cruises (since they did away with the rubber ducks). They "do" the job, but one little bump and they fall right off. We actually just got back from a cruise, found a tiny duck, and they actually used one size up. (Which is what I thought I was buying.) So, in the end, I would go up one millimeter for the tiny ducks. Again, the ones I purchased DO the job. I just don't like how easily they can be bumped off.

Great value for the money got 400 pieces in three different sizes. I use it for 3-D printing and I was able to add them to my projects. Wish they sold the larger pack.

Four stars because These are an experiment I’m going to try, by making my NScale RR town structures stay put but removable for transport and storage and for replacing light fixtures instead of gluing them down permanently! Haven’t done any yet but these seem strong enough to hold in place with steel washers glued inside corners of buildings while magnets recessed in 1/4 inch shallow holes.

These are perfect for crafts. Pay attention to the size as they are very small

I was using these for my 3d prints and needed smaller sizes than my normal magnets. These had a great arrange of sizes but for my needs they were way too weak to hold up the arms or even the head of my printed object. I put 3 in an arm and still the strength just wasn't there. I recommend them if you are working with small very small objects and minis. But if your working with 1/10 scale or larger I wouldn't recommend them.

They were the right size and were all magnetically stuck together when they arrived. As they should be... what else can you say?

These work great for my 3D prints, very strong and the sizes are dead on accurate!