Color-coded markings on the ergonomic handle and engraved size indicator (1-3/4", 1-3/8") allow for identification and secure grip when installing the door latch The reinforced construction allows for repeated use and minimal material fragments to ensure smooth installation and removal Simplifies door hardware alignment in residential, workshop or commercial applications where precise mortise cutting and latch positioning is crucial Perfect for enthusiasts, professional woodworkers and home owners who have confidence in their door upgrades and maintenance projects Door Latch Mortise Tool fits neatly on doors that are 1-3/4" or 1-3/8" thick and features a sturdy ABS design that provides double thickness compatibility and professional results, Manufacturer: Pffiocix