The CMT 800.527.11 3-Piece Entry and Interior Door Router Bit Set is a professional-grade routing solution designed for craftsmen who build or repair entry doors and interior passage doors. Engineered with a 1/2 in. shank for maximum stability during heavy-duty routing operations, this three-piece set brings together the essential bits needed to cut tenons, lock mortises, and properly set backsets - all in one coordinated kit. Right-hand rotation and two-tooth carbide construction deliver clean, repeatable cuts in a wide range of wood species and engineered materials, making this set a go-to choice for dedicated door and cabinet makers alike.

Key Features

• 3-piece coordinated bit set - provides everything needed for both entry and interior door joinery in a single professional kit, eliminating the guesswork of sourcing individual bits that may not match in geometry or cut height.
• 1/2 in. shank diameter - reduces deflection and vibration during routing, resulting in smoother cuts and longer tool life compared to smaller-shank alternatives.
• Right-hand (RH) rotation - compatible with the vast majority of handheld routers and router table setups, ensuring safe, conventional feed direction for controlled material removal.
• 2-tooth (flute) cutting geometry - balances chip clearance and surface finish, producing clean edges on solid hardwood, softwood, and engineered sheet goods alike.
• HW (carbide-tipped) blade material - provides superior edge retention over high-speed steel, maintaining sharpness through demanding production runs and repeated door-making cycles.
• Includes tenon cutting bit, lock mortise bit, and backset fence - each component works together as a system, so profiles align correctly for a precise, professional door fit every time.

Why This Product

• Designed specifically for door making - rather than a general-purpose assortment, this set targets the exact joinery cuts required for entry and interior door construction, so woodworkers spend less time searching for the right bit and more time at the bench.
• The 1/2 in. shank and carbide-tipped cutting edges work together to handle both solid hardwood and engineered materials like MDF, plywood, and melamine - covering the full range of materials used in modern door fabrication.
• The included backset fence is a precision component that comes ready to use, removing the need to fabricate or purchase a separate jig when routing lock mortises to standard backset dimensions.
• Right-hand rotation and a 2-tooth design make this set compatible with handheld routers, router tables, and CNC routing machines - so it fits into a variety of shop setups without special tooling changes.

Specifications

• Manufacturer Part Number: 800.527.11
• Brand: CMT Orange Tools
• Shank Diameter: 1/2 in.
• Number of Teeth: 2
• Blade Material: Carbide-Tipped (HW)
• Rotation: Right-hand (RH)
• Pieces in Set: 3
• Product Type: Router Bit Set

Approved Applications

• Entry door tenon and mortise joinery
• Interior door lock mortise routing
• Door backset layout and cutting
• Professional door and drawer making
• Handheld router use
• Router table use
• CNC routing machine use

What's Included

• Tenon Cutting Router Bit (800.628.11)
• Lock Mortise Bit
• Backset Fence