This is a recessed handle designed for furniture doors, drawers, or sliding closet doors.

The handle is intended for a 50 mm diameter hole and a depth of 11 mm. The main body of the handle has a 49 mm diameter, but it includes small raised ridges (each ridge is 1 mm thick), resulting in a total outer diameter of about 51 mm. 
 

These ridges are meant to provide better grip and prevent the handle from falling out during regular use (opening and closing doors or cabinets).

WITHOUT SUPPORTS

Important:
To fit the handle properly into a 50 mm hole, it is recommended to gently file or sand down the side ridges as needed.
Adjust the ridges so the handle fits into the hole snugly — tight enough to stay in place during everyday use