Universal Door Hinge Jig:Fits most hinges and is compatible with square corners (requires a chisel) and 1/4" and 5/8" radius corners.It cuts professional mortises from 2-1/2" to 5" in length,making it suitable for most interior doors,but not for door framesDurable Metal Construction:Made of precision-machined aluminum alloy with an orange anodized finish,it lasts three times longer than plasticThis sturdy design ensures a perfect,precise fit for all your door hinge projectsAll-in-One Guide and Tool:A built-in depth gauge eliminates the need for a ruler and accommodates thick (4-1/2" and 5") and thin (2-1/2" to 4") hingesA silicone non-slip pad secures the Door Hinge Jig to the door without leaving a markEasy to Use for Everyone:Designed for both DIYers and professionals,its clear and intuitive design allows anyone to use it easily,without requiring specialized skills,for faster and more seamless installation of interior or exterior doorsValue Professional Set:The kit includes 1 mortise jig,2 router bits,2 self-centering hinge heads,2 double-headed screwdrivers and a user manual,this tool set can handle all you need:The kit includes 1 mortise jig,2 router bits,2 self-centering hinge heads,2 double-headed screwdrivers and a user manual,this tool set can handle all you need