Negative points: - The quality of metal tools (screwdriver / needle assembly-disassembly bracelet / needles) is very poor (soft metal) twist to the slightest touch. - The pin extractor tool elements are detached from each other / bad snap-bonding. I have tried these accessories and I imagine the worst for the rest. 1 Board: Prefer safest quality tools and unity of preference (a low price is not always a good deal if it is not, simply, lost money).