The CMT Contractor Bull Nose Bit - 7/8 in. Diameter, 1/8 in. Radius, 1/4 in. Shank is a precision-ground router bit engineered to shape smooth, full-edge bull nose profiles on a wide range of wood and wood-based materials. Crafted from industrial-grade carbide (HW), this 2-flute right-hand-rotation bit delivers clean, consistent results on stair treads, window sills, table tops, shelves, molding, and countertops. Whether you are working with solid hardwood, softwood, or engineered wood composites, this contractor-grade edge-forming bit provides the control and finish quality that professional woodworkers and finish carpenters depend on.

Key Features

• Bull Nose Edge Profile - shapes a smooth, full-round radius on the complete edge of any workpiece, eliminating the need for hand sanding to achieve a finished look on stair treads, counters, and shelving.
• 1/8 in. Radius - produces a subtle, refined curve that suits fine furniture edges, window sills, and decorative molding where a clean, proportionate profile is essential.
• 7/8 in. Cutting Diameter - covers a practical edge width in a single pass, saving time and reducing the number of setups needed on repetitive profiling jobs.
• 3/4 in. Cutting Height - provides sufficient depth capacity to profile the full edge of standard workpiece thicknesses used in cabinetry, furniture, and interior trim applications.
• 2-Tooth Carbide (HW) Construction - hard tungsten carbide cutting edges retain sharpness through extended use on natural wood and wood-based panels, reducing downtime for bit changes.
• 1/4 in. Shank - fits the most widely used router collet size, making this bit compatible with a broad range of handheld routers and router tables already in the shop.
• Right-Hand Rotation - matches the standard rotation direction of virtually all routers, ensuring proper chip evacuation and a smooth cutting action without special setup.
• 2 in. Total Length - compact overall length supports stable, vibration-free performance and reduces deflection during edge profiling passes.

Why This Product

• Designed specifically for bull nose edge shaping, this bit creates a full, smooth radius profile in one pass - making it a practical time-saver for repetitive profiling tasks on stair treads, countertops, and shelf edges.
• The 1/4 in. shank fits standard router collets, so the bit integrates immediately into existing tool setups without adapters or additional hardware.
• HW carbide construction supports use on both natural wood and wood-based materials, giving woodworkers and contractors the flexibility to move between job types without switching bits.
• At 2 in. total length with a 3/4 in. cutting height, the bit is sized for controlled, stable routing on typical interior woodworking workpieces - including molding, window sills, and furniture panels.

Specifications

• Manufacturer Part Number: 85401
• Brand: CMT Orange Tools
• Diameter: 7/8 in.
• Radius: 1/8 in.
• Shank: 1/4 in.
• Cutting Height: 3/4 in.
• Total Length: 2 in.
• Number of Teeth: 2
• Material: HW (Carbide)
• Rotation: Right-Hand (RH)

Approved Applications

• Bull nose edge profiles on stair treads
• Window sill edge shaping
• Table top and countertop edge profiling
• Shelf edge routing
• Decorative molding profiles
• Natural wood and wood-based material edge forming