The little one sees the force at first glance not to. If one has the lithium-ion battery is charged only once, he screwed willingly and forcefully a whole company of IKEA furniture together (Expedit, Billy, etc.). Thanks to the IKEA-bits (is) no problem. The IXO IV is processed wertig, fits comfortably in your hand and is for this price an absolute bargain. I do not want to miss the little ones!