A house bell on a carriage that is connected with wire which I will supply once you determine how long you need. The bell carriage measures 3-1/4 x 7 inches long. The black mineral door bell pull is 2 inches in diameter and the plate is 1-3/8" x 3-3/8 " long and usually mounts on the outside door jamb or the wall.
The 2 triangular pieces are when you need to make a 90 degree with the wire. Please take a look at my other hardware in my store, thank you.