The support device comprises a support plate (16) with a support surface (17).

Each of the components comprises at least one bearing surface for bearing engagement with a corresponding bearing surface of another component.

A drill bit can include one bearing surface which contacts another bearing surface.

Each crossbar is provided with at least one support area (7) and a stop area (8) that runs essentially at a right angle therefrom.

A well tool can include one bearing surface which contacts another bearing surface.

Each base abutment protuberance has a respective base abutment surface.

The base (32) includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter.

The main body includes a working surface defining a flash edge.

The inventive panel also comprises at least one contact surface (6a, 6b), which is located inside the groove (6), and comprises at least one contact surface (7a, 7b) that corresponds with the at least one contact surface (6a, 6b).

Said pipe clip comprises a lower bearing surface (7) and an upper bearing surface (6) which enable at least two pipe clips to be piled on top of each other.

To this end, the insertion channel (8) has an upper introduction opening (32) and a lower supporting surface (20) as well as a second supporting surface (36).

The plug includes a mating surface that forms an interlocking engagement with the engagement surface of the wall.

The tibial component (154) includes a tibial bearing surface (196).

Each jaw may include a bearing surface and a lifting surface converging with the bearing surface to provide a wedge.

The implant can include a stem (24) defining a stem planar bearing surface (37) coupled to the second planar articulating bearing surface.