These are for use with Wali Electric monitor mounts (WL-M002)- 4″ C-Clamp for a desk or table. These are unused leftovers from installs where the grommet method of mounting was used instead of the C-Clamp. This is just the C-Clamp and you will need to provide any other hardware you need for your application. You get a C-Clamp in two parts and two screws (M8 x 12) to hold the two parts together (Hex #5) only. Made of heavy duty steel.