I do a lot of metal bending and this is a great product. The nail you wish to bend can be hammered
into a piece of wood. The small nails can be done with one hand, the others, two will be needed.
That is unless you are very strong.The spectator will not be able to straighten. The small one
however which resembles a wood finishing nail I was able to straighten, but it would be hard for
most. One can switch out, but not needed. Cannot see anything on these nails. I like it. Eventually
you will have to purchase refills. The video footage is great. There is a segment the third of three
where a magician uses a straw and has a cute effect. The bend that he did with the largest nail was
out of frame. That was my only complaint. The other two links are fair and square. The refills are
not available. They are deciding whether to sell a set together or separate. Meanwhile the set you
will receive has an ample supply.