The Festool 491072 Euro-hinge boring Router Bit HW 20mm is a hinge location cutter made for boring 20 mm cup holes for euro-style hinges. This is a router bit designed for hinge boring and cabinet hardware installation. Model Number 491072. If you build cabinets, fit doors, or do clean hardware work in the shop, this bit is built for accurate, repeatable hinge locations with compatible Festool routers.

What matters here is not just the diameter, but what that diameter does on the job. The 20 mm cutter size matches euro-hinge boring applications, which means you can cut the recess needed for hinge cups without swapping to an off-size accessory and hoping it works. That saves setup time and helps keep hinge alignment consistent across multiple doors.

Festool lists this as an HW cutter with an 8 mm shank. In plain terms, you are getting carbide cutting edges and a proper router-compatible shank size for the supported machines. The carbide edge is the part that matters most in day-to-day use because it holds up better when you are cutting repeated holes in cabinet stock, plywood-faced material, and other wood products used in finish carpentry and built-ins.

The overall length of 2-1/8 in. gives the bit enough reach for controlled hinge boring work while still staying compact enough for router use. This is not a general-purpose straight bit trying to do specialty work. It is a purpose-built hinge location cutter, and that usually means a cleaner process when the job calls for boring a specific hardware recess over and over.

Compatibility is a strong point. Festool specifies this bit for the OF 900, OF 1000, OF 1010, OF 1010 R, OF 1400, OF 2000, and OF 2200 routers. If you are already on that Festool router platform, this accessory makes sense because it keeps your workflow inside the system you already own instead of piecing together a workaround with mismatched bits.

This bit is best suited for cabinet installers, finish carpenters, shop woodworkers, and serious DIY users doing euro-hinge installation. If your work involves one-off custom doors or small production runs where consistency matters, this is the kind of dedicated accessory that earns its keep. If you do not need 20 mm hinge cup boring, then a general router bit is the better buy. But if you do, using the correct hinge location cutter is the cleaner, faster way to get there.

Festool 491072 Euro-hinge boring Router Bit HW 20mm for clean cabinet hardware work

This is a specialty bit, and that is exactly why it makes sense for anyone doing euro-hinge installation on the regular.

• Who it's for: Cabinetmakers, finish carpenters, and woodworkers using compatible Festool routers for hinge cup boring.
• Why it stands out: Correct 20 mm sizing, carbide HW cutting edges, and direct compatibility with a wide range of Festool OF routers.
• Worth knowing: This is not a do-everything router bit. It is a dedicated hinge location cutter, so it is worth buying when that specific job is part of your workflow.

• What type of accessory is this? It is a hinge location cutter, also described as a euro-hinge boring router bit.
• What is the cutting diameter? The cutter diameter is 20 mm, which is listed as 3/4 in.
• What shank size does it use? It uses an 8 mm shank with a listed shank diameter of 0.31 in.
• Which Festool routers is it designed for? Festool lists compatibility with the OF 900, OF 1000, OF 1010, OF 1010 R, OF 1400, OF 2000, and OF 2200.