First, the article shown in the photo is not the same as the item received. Indeed, one can believe a priori that one buys a square knife range and large, it is not. The useful area should be about 6cm of 8, and the useful depth should be 17cm. Then the drill unit is not attached to the bottom but not just placed on two piece of wood to hold thanks to their weight, do so especially not return it, but in addition, these small pieces of wood are nailed summarily. On arrival home, so I had the reclouer and add glue to ensure the object is usable.