When I fall on this Wolfcraft and I could watch different videos on Utube, I let myself be convinced. And well, frankly, I did well !!! This stuff's great, not very expensive and more accurate than the centralizers. There, the game in which you insert your drill for drilling straight, the drill being guided by the kit. The journals fit together easily. In short, tinkering ... becomes pure pleasure. And I could take my furniture, but the start this time all is OK!
In short, I highly recommend. It's really a good product I was able to acquire 40 euros.