CMT Roundover Bit with Insert Knives - 1/4 in. Radius, 1/4 in. Shank (661.064.11) by CMT Orange Tools is a precision router bit designed to produce smooth, rounded edges on wood, laminates, and composite panel materials. With a 1/4 in. radius profile and right-hand rotation, this bit delivers clean, consistent roundovers that give furniture, cabinetry, and millwork a professional, softened appearance. The two-sided replaceable insert knives make this an economical and efficient choice for both hand router and router table use, whether you are profiling hardwood edges, finishing laminate surfaces, or shaping chipboard panels.

Key Features

• Two Replaceable Insert Knives (Z2): Blades are fixed with special Torx screws and can be swapped out when dull - reducing downtime and extending the usable life of the bit body, lowering overall tooling cost.
• Double-Sided Knife Profile: Each insert knife is profiled on 2 sides, so you can flip the blade to a fresh cutting edge before replacing - maximizing efficiency and value per blade.
• 1/4 in. (6.35 mm) Radius: Produces a well-defined, smooth roundover profile that gives edges a softer, more refined look - ideal for visible surfaces in furniture and cabinetry where edge quality matters.
• 1/4 in. Shank Diameter: Compatible with 1/4 in. collet routers, providing a secure, vibration-reduced grip during operation - suited for both hand routers and router table setups.
• HW (Carbide) Cutting Material: Hard metal construction delivers clean cuts and durable edge retention across a wide range of materials including hardwood, softwood, laminates, and chipboard.
• Right-Hand Rotation: Engineered for standard right-hand router spindles - compatible with the vast majority of hand routers and router tables without any additional setup adjustments.
• 1-1/8 in. Cutting Diameter: Provides sufficient reach for profiling a variety of panel thicknesses and edge depths in a single pass.
• 15/16 in. Cutting Height: Accommodates a meaningful depth of cut, allowing the full roundover profile to be engaged cleanly in one router pass on typical workpiece edges.

Why This Product

• The replaceable two-sided insert knives mean you get multiple fresh cutting edges from a single set of blades - a practical advantage for shops or craftspeople who want to minimize interruptions and reduce per-cut tooling expense.
• The 1/4 in. radius roundover is a versatile, widely used profile for softening exposed edges on furniture, shelving, and cabinetry - making this bit a reliable go-to for a broad range of woodworking and laminate finishing tasks.
• Hard metal (HW) carbide construction ensures the insert knives maintain a sharp, clean cutting edge across both natural wood species and engineered panel materials like laminates and chipboard - reducing tearout and producing smooth, finished surfaces.
• With a compact 1/4 in. shank and right-hand rotation, this bit fits the most common hand router and router table collet configurations, making it a practical addition to an existing router setup without requiring additional tooling or adapters.

Specifications

• Manufacturer Part Number: 661.064.11
• Brand: CMT Orange Tools
• Diameter: 1-1/8 in.
• Cutting Height: 15/16 in.
• Total Length: 2-41/64 in.
• Radius: 1/4 in.
• Shank Diameter: 1/4 in.
• Number of Teeth (Knives): 2
• Rotation: Right-Hand
• Cutting Material: HW (Hard Metal Carbide)

Approved Applications

• Hardwood edge profiling
• Softwood roundover shaping
• Laminate edge finishing
• Chipboard and composite panel edge routing
• Furniture and cabinetry edge softening
• Router table profiling operations
• Hand router edge shaping