I brought is ERA 183 - Auto Deadlocking Night Latch to replace my old 5 pin barrel Chubb auto deadlock night latch. It is a direct replacement only had to drill two new holes in the wooden frame to fit. The ERA lock has 6 pins in the barrel so it is far more secure. It was very easy to fit and came with all the screws, finish is very good and feels very sturdy also used the spare key cutting service. All keys fit nicely and was value for money. I would recommend this lock and key cutting service to any one.