Not suitable for 16/18mm material since the minimum setting is 13mm. Beside that looks solid.
I am not satisfied with the product, the plywood I use is 18 mm thick and the holes are halfway up to 9 mm thick. I don't have that option on this piece, the minimum thickness is 12.5 mm.I have described what the problem is and I am very dissatisfied with seller answer. He should've written in the product description exactly what is the minimum distance at which holes can be drilled.