Scoring for Fewer Tools : Reversible latch mortiser supports scoring for round and square latches , drastically reducing the number of tools needed . Ideal for carpenters , deleting worries about tool compatibility Fits Common Lock Sizes : Works with the most popular lock dimensions for wooden doors . Adjustable plastic guide templates fit 1-3/8inch , 1-1/2inch , 1-3/4inch thick doors , plus 2-3/8inch and 2-3/4inch standard door panels , meeting most residential and commercial lock installation needs Drill and Install in One Tool : This tool precisely replicates latch shapes , cuts lock holes with its top chisel , and installs latches effortlessly using a built in drill bit , combining hole cutting and installation into one seamless step for efficiency No Measure Door Thickness Adaptation : Flip the 90° fence and insert into slots to fit 1-3/8inch or 1-3/4inch door thicknesses , no measuring required . Swappable square/round blades and a top chisel create professional latch shapes and lock holes easily Adjustable Precision Drilling : Tunable guide templates ensure accurate drilling , with snap lock arms to select door width and backset . Drill halfway through one side , then the other until penetration , ensuring clean , aligned holes, Manufacturer: Sutowe