GoHelper Door Hinge Jig

Aluminum alloy, cuts hinge mortises 2.5"–5" long for round (1/4", 5/8" radius) and square-corner hinges (chisel required for square corners), built-in depth gauge, includes self-centering hinge bit + double-ended screwdriver bit. Fits doors up to 1-3/4" thick.

Solves a genuinely fiddly hand-tool job — chiseling hinge mortises accurately by hand is a real skill gap for most DIYers — with a router template.