Prefabricated shelves don't fit in every living situation. Slanted ceilings, for example, often require individual solutions. When you assemble a wooden shelf unit, the cordless screwdriver can be used both to insert the screws and to drill the screw holes.

How to proceed:

Mark the drilling positions on the boards. So that the shelf is not at a slant when you are finished, measure the positions precisely.

Use the wood drill bit to drill at the marked positions.

Then use the countersink bit to carefully enlarge the drilled holes for the screw heads in such a way that the screw heads fit and are flush with the wood surface.

Insert a bit that matches the screws in the cordless screwdriver, fit the components together and insert the screws.