Description: 【Latch Mortise Tool】: Door lock latch tool helps to remove material from the door latch installation, precise flush mounting, easy to use, significantly reducing installation time and the number of tools required for the work 【Material】: Door lock installation kit holding tool is made from durably reinforced pp material for the adjustable guide and will withstand non stop application during daily jobs 【Easy to Set】: The adjustable guide template is convenient for accurate drilling, and is equipped with lock arm for selecting door width and backset. Drill side of the door panel vertically to about half position, and then drill the other side of the door panel until it penetrates 【For Daily Use】: The design is suitable for the most common lock size in daily use for wooden doors. The adjustable plastic guide template is suitable for 1-3/8 inch, 1-1/2 inch and 1-3/4 inch thick doors and 2-3/8 inch and 2-3/4 inch backsets 【Application Range and Forms】: To ensure the smooth door lock installation set can be used to optimal extend, the frame must be well positioned. This will enable the DIYs or professionals to execute the cutting with the hole saws provided and drill perfectly aligned holes. The process allows you to quickly install and locksets with ease Specification: Material: PP Size Chart: 16.5cmx7.9cm/6.50inchx3.11inch  Package Includes: 1 Set Door Lock Installation Kit Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.