CMT 812.620.11 Straight Bit Long Series - 12mm Diameter, 1/2 in. Shank is a professional-grade long-series straight router bit engineered for deep, precise cuts in a wide range of wood and composite materials. Built with micrograin carbide cutters on special Fatigue Proof steel bodies, this 2-flute bit delivers smooth, clean edges even under heavy production loads. The long-series design provides the extended reach needed for deep dadoes, grooves, and panel joinery that standard-length bits cannot achieve. CMT's trademark orange PTFE non-stick coating keeps the bit running clean and cool, reducing resin and pitch buildup during extended use on solid hardwood, plywood, MDF, laminates, melamine, and more.

Key Features

• Micrograin Carbide Cutters on Fatigue Proof Steel - the combination of high-density micrograin carbide cutting edges and a specially formulated Fatigue Proof steel body means the bit withstands even the heaviest workloads without deflecting, giving you a smooth, precise cut every time.
• Double-Faced Razor-Sharp Cutters - dual-sided cutting geometry produces a clean, finished edge on both faces of your workpiece, reducing sanding and cleanup time after routing.
• Long-Series Reach (1-1/4 in. cutting height) - the extended cutting height allows you to route deep dadoes, grooves, and mortises in a single pass or multiple controlled passes that shorter bits simply cannot reach.
• CMT Orange PTFE Non-Stick Coating - the trademark orange shield surface treatment prevents resin, pitch, and residue from bonding to the bit body, extending tool life and maintaining cutting performance across long production runs.
• Exceptional Chip Ejection - optimized flute geometry clears waste material quickly and efficiently, enabling cleaner, more consistent cutting and reducing heat buildup that can scorch wood or dull the edge prematurely.
• 2-Flute (2-Tooth) Design, Right-Hand Rotation - the two-flute configuration balances material removal rate with surface finish quality, and the right-hand rotation is compatible with standard handheld routers, router tables, and CNC routing machines.
• 1/2 in. Shank - the full 1/2 in. shank provides maximum stability and minimal vibration in larger router collets, contributing to truer, more accurate cuts compared to smaller-shank alternatives.

Why This Product

• When a standard-length straight bit cannot reach the full depth of a dado, groove, or panel joint, the long-series design with 1-1/4 in. of cutting height gives you the extended reach to complete the cut cleanly without repositioning the workpiece.
• The micrograin carbide cutting edges paired with Fatigue Proof steel resist wear and material fatigue during heavy continuous use, so the bit holds its edge longer and reduces the frequency of bit changes during production work.
• The orange PTFE non-stick surface treatment keeps pitch, resin, and adhesive residue from accumulating on the bit body, which helps maintain consistent feed rates and prevents the burning or tear-out that a gummed-up bit can cause.
• With a 12mm cutting diameter and a 1/2 in. shank, this bit is well-suited for router tables and CNC machines where rigidity and dimensional accuracy are critical - the large shank minimizes runout and keeps cuts on target.

Specifications

• Manufacturer Part Number: 812.620.11
• Brand: CMT Orange Tools
• Diameter: 12mm
• Cutting Height: 1-1/4 in.
• Total Length: 2-3/4 in.
• Shank: 1/2 in.
• Number of Teeth: 2
• Material: HW (Hardmetal/Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Straight Bit, Long Series

Approved Applications

• Deep straight cuts in solid hardwood and softwood
• Dadoes and grooves in plywood, MDF, and chipboard
• Template routing operations requiring extended bit reach
• Panel joinery in laminates, melamine, and plastics
• Mortising and deep profiling on router tables and CNC routing machines