I bought these imams and was clearly wrong picture from the Chinese site, They seemed so much bigger! Not to mention they were round and square came!
In spite of this are quite interesting: small boot neodymium with about of 0.5 cm wide and 1 mm thick.
Put them next to each other is task for those who have a lot of patience. They attract each other and if you stick with any wrong move.
Without much effort you put in a single bar, but other formats require more careful.
I've put them as a plan is difficult, any wrong move and they form a bar.
Another interesting thing and hope the bar and form this drill appearance.
Who wants to risk buying can follow the link from dealextreme. Maybe your not coming round like the picture?