Our rim cylinder pulls are designed for use with a rim cylinder and night latch. This product is typically used on exterior doors to push/pull the door into the open/closed position. Held in place by the rim cylinder which compresses with the night latch to tighten and fix. These are also equipped with a location pin on the rear to prevent rotational movement. Additional Information: Finish: Antique Brass, Aged Bronze, Antique Pewter, Black, External Beeswax, Matt Black, Pewter, Polished Brass, Polished Bronze, Polished Chrome, Polished Marine, Polished Nickel, Satin Brass, Satin Chrome or Satin Marine Overall Size: 81mm x 50mm Backplate Size: 53mm x 50mm Projection: 26mm Plate thickness: 5mm