CMT Contractor Roundover and Beading Bit - 5/8 in. Diameter, 1/16 in. Radius, 1/4 in. Shank by CMT is a precision-ground carbide-tipped router bit designed for softening sharp corners, creating decorative bead profiles, and producing smooth, consistent curved edges on a wide range of wood and wood-composite materials. With its 1/16 in. radius, this bit delivers a subtle, refined roundover that suits fine furniture edges, cabinetry trim, and decorative millwork. Paired with a cove bit, it becomes an essential part of a drop-leaf table joint or other intricate profiling work - making it a versatile addition to any woodworking shop.

Key Features

• Carbide-Tipped Cutting Edges (HW Material) - hardmetal carbide tips stay sharp longer through demanding cuts in hardwood, softwood, plywood, and composite sheet goods, reducing the frequency of bit replacement.
• 2-Flute Cutting Configuration - two carbide-tipped cutting edges produce a smoother surface finish per pass compared to single-flute designs, resulting in less sanding and cleanup after routing.
• Anti-Kickback Design - limits the depth of cut on each pass to control feed forces and minimize the risk of sudden kickback, improving safety and routing accuracy for both handheld and table-mounted use.
• Bottom Bearing Included - the integrated ball-bearing pilot rides along the workpiece edge to maintain a consistent profile depth without the need for a fence, making freehand edge routing straightforward and repeatable.
• Heat-Treated Shank and Body - the hardened 1/4 in. shank and body resist deflection and wear under load, contributing to dimensional accuracy and extended service life across high-volume work.
• Right-Hand Rotation - compatible with the standard right-hand rotation of virtually all routers and router tables, ensuring immediate drop-in use without special tooling or adapters.
• 1/4 in. Shank Diameter - fits compact routers, trim routers, and laminate trimmers as well as full-size routers equipped with a 1/4 in. collet, broadening the range of machines this bit can be used with.

Why This Product

• The 1/16 in. radius profile is a refined, low-profile roundover that removes sharp corners without dramatically altering the look of an edge - ideal for furniture, cabinet doors, and trim where a subtle, clean profile is preferred over a heavy bullnose.
• The dual-purpose roundover and beading geometry means this single bit can produce two distinct profile styles depending on bearing height, reducing the number of bits needed for varied edge treatments in a single project.
• With anti-kickback geometry and a bottom bearing guide, this bit is engineered for both handheld router work and router table setups - giving woodworkers the flexibility to use the same bit across different working methods without sacrificing control or consistency.
• The 1/4 in. shank makes this bit compatible with compact and trim routers as well as full-size machines, so it is a practical choice for shops that run multiple router sizes or for contractors who need a portable edge-profiling solution.

Specifications

• Manufacturer Part Number: 83801
• Brand: CMT Orange Tools
• Diameter: 5/8 in.
• Radius: 1/16 in.
• Shank: 1/4 in.
• Cutting Height: 5/16 in.
• Total Length: 2 in.
• Number of Teeth: 2
• Blade Material: Carbide-Tipped (HW)
• Rotation: Right-Hand (RH)
• Bearing: Bottom bearing included

Approved Applications

• Rounding over sharp corners on furniture components and cabinet doors
• Creating decorative bead profiles on trim, molding, and millwork
• Edge profiling on solid hardwood, softwood, plywood, and MDF panels
• Producing the mating profile for drop-leaf table joints when paired with a cove bit
• Softening edges on shelving, countertop nosing, and decorative woodwork

What's Included

• 1x CMT Contractor Roundover and Beading Bit - 5/8 in. Diameter, 1/16 in. Radius, 1/4 in. Shank (MPN: 83801)
• 1x Bottom bearing