Moment Jimmy Proof Rim Lock.

Backset: 60mm (2-3/8").Door Compatibility: Fits doors with a thickness of 35mm (1-3/8") to 55mm (2-1/8").Operation: Features a thumb turn on the inside and is key-operated from the outside.Construction: Heavy-duty metal construction, typically in a gold or brass-plated finish for durability and corrosion resistance.Mechanism: Uses interlocking vertical bolts that engage with the strike plate, creating a three-point hold that is extremely difficult to pull or push apart.