The Eurospec 63mm (2.5\") Standard Tubular Mortice Latch Electro Brass is best suited to lever handles on backplate, which are sprung. The cost of the handles will generally determine the quality of the latch fitted to the door and in our opinion this latch would not be suitable for levers on roses, as it does not have back to back fixing holes, and for the more expensive levers on backplate. It is the most commonly used latch for lever handles on backplates and the most common size used for standard internal doors is the 63mm body latch. This latch has a steel case and solid br...